Answer:
At equilibrium, the partial pressure of a gas is equal to the product of its equilibrium constant and the partial pressure of the other gases it reacts with. In this case, the equilibrium constant is given as K=6.9×10−6 at 1000 K, and the partial pressure of SO2 and Cl2 are both 0.760 bar. Therefore, the partial pressure of SO2Cl2 at equilibrium is:
6.9×10−6 * 0.760 bar * 0.760 bar = 4.3×10−8 bar
So the partial pressure of SO2Cl2 at equilibrium is 4.3×10−8 bar.
There are so many types of chemical reaction reaction like combination reaction, double displacement reaction. To solve such this we must know the concept of equilibrium reaction. Therefore, the partial pressure of SO[tex]_2[/tex]Cl[tex]_2[/tex] at equilibrium is 4.3×10⁻⁸bar.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved.
The balanced equation can be written as
SO[tex]_2[/tex](g)+Cl[tex]_2[/tex](g)⇌SO[tex]_2[/tex]Cl[tex]_2[/tex](g)
K=partial pressure of SO[tex]_2[/tex]Cl[tex]_2[/tex] ÷(partial pressure of SO[tex]_2[/tex] × partial pressure of Cl[tex]_2[/tex] )
Substituting all the given values, in the above equation, we get
6.9×10⁻⁶ = (0.760 bar × 0.760 bar)÷partial pressure of SO[tex]_2[/tex]Cl[tex]_2[/tex]
= 4.3×10⁻⁸bar
Therefore, the partial pressure of SO[tex]_2[/tex]Cl[tex]_2[/tex] at equilibrium is 4.3×10⁻⁸bar.
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The total number of electrons in p orbitals in a silver atom is
A. 6
B. 10
C. 12
D. 18
E. 19
F. 22
The total number of electrons in p orbitals in a silver atom is 18.
What is the electronic configuration of silver (Ag) atom?The position of silver (Ag) in the fifth row of the periodic table, the 11th column of the periodic table, the 9th column of the transition metal, or the d block, determines the electron configuration for silver (Ag). The atomic number of silver is 47. Consequently, the final electron configuration for silver must be:
[tex]1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2} 3d^{10} 4p^{6} 5s^{2} 4d^{9}[/tex]
Now, the total number of electrons in p orbitals are 18.
By changing the [tex]1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2} 3d^{10} 4p^{6}[/tex] , either core notation or noble gas notation [Kr] can be used to write this notation. Then the configuration can be written as-
[tex][Kr] 5s^{2} 4d^{9}[/tex]
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Potassium dichromate is used to titrate a sample containing an iron. To perform that, the sample is dissolved in an acidic solution, the solution is then titrated with 25 mL of 0.021 M K₂Cr₂07(294 g/mol), resulting in the formation of Fe3+ and Cr³+ ions in an acidic solution. What is the mass of Fe(II) (55.8 g/mol) in the sample? (equation: 6Fe²+ + Cr₂O7²- + 14H* →6Fe³+ + 2Cr³+ + 7H₂0)
The mass of the iron that is present in the sample is 1.76 g.
What is the mass of the iron?We know that we can be able to use the stoichiometry of the reaction so as to be able to obtain the mass of the iron that is used in the reaction. Now we have the the fact that;
Number of moles of the dichromate = 25/1000 * 0.021
= 0.00525 moles
If 6 moles of iron reacts 1 mole of the dichromate
x moles of iron reacts with 0.00525 moles of the dichromate
x = 6 moles * 0.00525 moles /1 mole
= 0.0315 moles
Mass of the iron = 0.0315 moles * 56 g/mol
= 1.76 g
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I need help explain why the groundwater heater system will heat up the school more then the water heater, please try to make the explaining as long as possible.
Given the fact that it consumes more water than the other system, the groundwater heater will warm the building more efficiently than the hot water system.
Explain what groundwater is.Water that is found underground in saturated regions under the surface of the earth is known as groundwater. The water table is the term for the saturated zone's top surface. Contrary to common perception, subterranean rivers are not created by groundwater.
How is ground water created?Fresh water that soaks into in the soil from precipitation or melting snow and ice is called groundwater. It is kept in the microscopic crevices (pores) underlying rocks and dirt. Nearly 95% of the government's fresh water supplies come from groundwater.
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Successive Ionization
Energies (kJ/mol)
1st: 786.3
2nd: 1,580
3rd: 3,230
4th: 4,360
5th: 16,000
6th: 20,000
If this element is found in Period 3, what is its likely identity?
a. sodium
b. magnesium
c. aluminum
d. silicon
e. phosphorus
f. sulfur
g. chlorine
h. argon
Based on the information provided, the element with successive ionization energies of 786.3 kJ/mol, 1,580 kJ/mol, 3,230 kJ/mol, 4,360 kJ/mol, 16,000 kJ/mol, and 20,000 kJ/mol is likely to be aluminum (c).
Ionization energy is the energy required to remove an electron from an atom or a positive ion. It is a measure of the atom's tendency to lose electrons and is generally higher for atoms with a smaller atomic radius and a higher positive charge on the nucleus.
The ionization energies of the elements in Period 3 (the third row of the periodic table) are generally as follows:
Sodium (a): 496.1 kJ/mol (1st), 4,562 kJ/mol (2nd)
Magnesium (b): 738.1 kJ/mol (1st), 1,450 kJ/mol (2nd), 7,646 kJ/mol (3rd)
Aluminum (c): 578.8 kJ/mol (1st), 1,180 kJ/mol (2nd), 2,980 kJ/mol (3rd), 4,180 kJ/mol (4th)
Silicon (d): 786.5 kJ/mol (1st), 1,551 kJ/mol (2nd), 3,217 kJ/mol (3rd), 4,336 kJ/mol (4th), 9,900 kJ/mol (5th)
Phosphorus (e): 1,045 kJ/mol (1st), 2,079 kJ/mol (2nd), 3,169 kJ/mol (3rd), 6,491 kJ/mol (4th)
Sulfur (f): 1,112 kJ/mol (1st), 2,077 kJ/mol (2nd), 3,281 kJ/mol (3rd), 4,535 kJ/mol (4th)
Chlorine (g): 1,257 kJ/mol (1st), 2,362 kJ/mol (2nd), 3,595 kJ/mol (3rd), 4,906 kJ/mol (4th)
Argon (h): 1,521 kJ/mol (1st)
As you can see, the ionization energies of aluminum (c) are the closest match to the values given in the question. Therefore, the element is likely to be aluminum.
name the 3 similar parts of every amino acid. a. b. c.
All amino acids have the same amino, carboxyl, and carbon groups; the only characteristic that makes an amino acid different is the R-group.
Which three components do all amino acids share in common?There is a basic structure shared by all amino acids. A hydrogen atom, an R-group, or side-chain group, a basic amino group, a carboxylic acid group, and a central carbon atom are all connected to one another by a molecule. What differentiates amino acids is their R-group.
What do you call the three bases that encode an amino acid?An amino acid is encoded by a codon, a triplet of nucleotides. An amino acid is encoded by each trio of nucleotides.
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What is the %CO2 in ZnCO3?
Answer:
ZnCO3 solid reacts to form Zn0 solid plus CO2 gas
The molar masses of four unknown gases are shown in the table.
Molar Mass of
Unknown Gases
Gas Molar Mass
A
44 g/mol
B
20 g/mol
30 g/mol
D
32 g/mol
Which gas is likely to have the highest rate of effusion? (4 points)
Gas A
Gas B
Gas C
Gas
GAS A, Graham's law states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass or that the rate of effusion of two gases = square root of the inverse of their molar masses.
How can the molar mass of an unidentified gas be determined?PV = nRT, where P is pressure (in atm), V is the volume (in L), n is the number of moles of gas, R is the universal gas constant (0.08206 Latm/molK), and T is temperature, is the formula used to calculate the molar mass (in K).
What is the molar mass of a gas whose density is 0.761 g L at STP?By dividing the mass of one mole of ammonia by the aforementioned volume, the density can now be computed. This density is somewhat lower than the ammonia density at the STP, which is equivalent to (170.4g/mol)(22.4L/mol)=0.761g/L.
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How can a chemical equation be balanced? Responses by using exponents to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using exponents to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using new elements to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using new elements to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using subscripts to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using subscripts to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using coefficients to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants
The balancing of chemical equations is based on the law of conservation of mass.
How could a chemical process be made to balance out? Which integers can be changed, and which cannot?
When an equation is balanced, the coefficients can only be changed (the numbers in front of molecules or atoms).
The coefficients are indicated by the numerals in front of the molecule. Subscripts are the smaller numerals found following atoms. These cannot be changed while balancing chemical equations!
How is a chemical equation brought to equilibrium?
the algebraic balancing technique. Chemical equations can be balanced by assigning algebraic variables as stoichiometric coefficients to each species in the unbalanced chemical equation.
Equations in mathematics are used to calculate the values of each of these variables
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select the reasons why early molecular geneticists knew that the genetic material needed to be a stable molecule.
This allowed for exact replication. Genetic material has to be a stable molecule in order to be handed down from one generation to the next.
By the genetic, what do you mean?The study of how genes and characteristics are handed down from one generation to the next is known as genetics. Our health, looks, and even personality are all influenced by the information in our DNA! It all starts with genetics.
Which examples from genetics?The study of genes is called genetics. From one generation to the next, our genes transmit information. The reason one child has blonde hair like their mother while their sibling has dark hair like their father, for instance, is genetic.
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Any material listed in the cell notation that is not specifically oxidized or reduced is most likely: Select the correct answer below: an inert electrode an active electrode contained in the salt bridge none of the above
Any material listed in the cell notation that is not specifically oxidized or reduced is most likely an inert electrode.
When looking at the cell notation, any material that is not specifically indicated as either being oxidized or reduced is most likely an inert electrode. An inert electrode is a material that does not participate in the redox reactions taking place in the electrochemical cell. It is often used as a conductor to connect the anode and the cathode, but it does not take part in the reaction itself.
The other option, an active electrode, is a material that does participate in the redox reactions taking place in the electrochemical cell. This material can either be oxidized or reduced, depending on the circumstances. It is important to note that an active electrode is not always present in the cell notation.
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50.0 mL of a solution of hydrochloric acid (HCl) of unknown concentration reacts completely with 58.9 mL of 0.105 M sodium hydroxide (NaOH). What is the concentration of the hydrochloric acid?
The concentration of the hydrochloric acid solution is 0.124M.
How to calculate the concentration?The concentration of a solution can be calculated using the molarity equation as follows:
CaVa = CbVb
Where;
Ca = concentration of acidCb = concentration of baseVa = volume of acidVb = volume of baseAccording to this question, 50.0mL of a solution of hydrochloric acid (HCl) of unknown concentration reacts completely with 58.9 mL of 0.105 M sodium hydroxide (NaOH). The concentration of the hydrochloric acid can be calculated as follows:
50 × Ca = 58.9 × 0.105
50Ca = 6.185
Ca = 6.185/50
Ca = 0.124M
Therefore, 0.124M is the concentration of the hydrochloric acid solution.
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a second chemist repeated the three experiments and observed that the reaction rates were considerably greater than those measured by the first chemist, even though the concentrations of the reactants and the temperature in the laboratory were the same as they were for the first chemist. which of the following is the best pairing of a claim about a most likely cause for the greater rates measured by the second chemist and a valid justification for that claim?
The second scientist must have introduced a catalyst to the reaction, opening up a new avenue for the reactant particles to engage in chemical reaction with a lower activation energy than the uncatalyzed reaction in the first chemist's trials.
Which term best describes concentration?The amount of a material in a certain area is referred to as concentration. A another way to think about concentration is as the proportion of a solution's solute to its entire solution or solvent.
Which instances of a concentrated solution are there?In a concentrated solution, the solute is present in significant levels relative to the solvent. Orange juice, brine solution, and black tea are a few examples. A diluted solution is one that has a little amount of solute and a lot of solvent. Salted water is one illustration.
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find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the given lines. x
V = Adx, or alternatively Ady, where A denotes the usual disc's area and r = f(x) or f(y), depending on the axis of revolution. 2. The volume of the solid produced by a region under f(y) (to the left of f(y)) limited by the y-axis, the horizontal lines y=c and y=d, and rotating around the y-axis.
How do you calculate the volume of a solid produced by rotating about the x-axis?= πr2h 3.
What is the solid's volume as a result of rotating the area bordered by and around the y-axis?V = dc[f(y)]2dy can be used to determine the volume of a solid that has been rotated about the y-axis.
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Pure iron is not strong enough to be useful. Explain, using particle
theory, how adding carbon to iron changes its properties.
Pure iron is not so strong to use in construction field. Addition of carbon make iron more strong and less brittle.
What is cast iron ?The useful form of iron made by incorporating carbon and traces of other metals is called cast iron. Pure form of iron is not strong enough to be useful and it is brittle.
Steel does become stronger and more durable when carbon is added to iron, but only to a certain extent. It will then grow stronger but less resilient (ie like cast iron).
Iron is made stronger by carbon by altering its crystal lattice. In terms of effect, this distortion is comparable to work hardening. Sadly, it is a very complicated impact that depends on how the steel is heat treated and precisely how much carbon is applied. Not all metals are subject to this.
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provide a multi step synthesis to create the intended product for the listed original reactant the number of steps are provided
A synthesis reaction is a type of chemical reaction in which two or more reactants combine to form a new compound or product.
How to do synthesis reactions?In a synthesis reaction, atoms from the reactants are rearranged to form a new chemical structure, with the total number of atoms remaining the same.
Identifying the starting material or reactant, as well as the desired end product or target molecule.
Developing a plan or strategy for the synthesis, including a sequence of reactions and steps that will convert the reactant into the product.Choosing the appropriate reagents and conditions for each step of the synthesis, taking into account factors such as reactivity, solubility, and stability.Carrying out the synthesis, carefully monitoring and controlling the reactions to ensure that they proceed as planned.Isolating and purifying the product, using techniques such as crystallization, distillation, or chromatography to remove any impurities or byproducts.Characterizing the product to confirm its identity and purity, using techniques such as spectroscopy, chromatography, or X-ray crystallography.Evaluating the overall success of the synthesis, including any challenges or difficulties that were encountered and how they were overcome.To learn more about synthesis reactions refer :
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What is the mass in grams of aluminum iodide that would be required to yield an actual amount of 80.25 grams of aluminum?
The mass in grams of aluminum iodide that is required to yield an actual amount of 80.25 grams of aluminum is 1407.89 grams
How to find theoretical yield?Let x represent the number of grams of aluminum iodide required to yield 73.75 grams of aluminum.
The charge on each aluminum ion is +3 while the charge on each iodide ion is -1. The empirical formula for aluminum iodide would be AH₃.
The relative atomic mass of aluminum and iodine on a modern periodic table is:
Al =26.982.
I = 126.904.
Therefore number of moles, n = mass, m / molar mass, M
molar mass of AH₃, M = 410.694
n = ( x / 410.694)
The number of grams of aluminum would be
mass = number of moles * molar mass
mass = (26.982 / 410.694)x g
Hence, the actual yield of aluminum would be:
Actual yield = percentage yield * theoretical yield
where:
theoretical yield = (26.982/410.694)x g
Actual yield = (26.982/410.694)x * 86.8%
Actual yield = 0.057x g
Since the actual yield is 80.25 g
0.057x g = 80.25
x = 1407.89 grams
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If a precipitate forms, you have a reaction. The precipitate in this lab will be a metal. That precipitate is (more or less) reactive than your original metal?
This question has been bugging me and I just don’t know if the precipitate would be more or less reactive, please help!
More reactive metals will drive less reactive metals from out metal salt complexes. As a result, a new salt as well as the weaker metal are created.
What is a metal, exactly?Any of a group of materials known as metals that exhibit strong thermal and electrical conductivity as well as mutability, ductility, and high light reflection. Copper is an example of metal.
Why is metal so crucial?Metals have various properties, including strength, hardness, and stiffness. From a small paperclip to a huge airplane, metals may be melted and shaped in to something. They effectively conduct heat and electricity.
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Write the reaction that takes place between Ammonia, NH3, and Acetic Acid, HCH3COO. Then determine the acid, base, conjugate acid and conjugate base.
The solution is a. CH3COOH as the acid and base conjugation in the reaction between ammonia and acetic acid −.
In the given chemical equation, acetic acid acts because the acid even as ammonia acts because the base.
The given chemical equation is an acid-base response. Specifically, it's miles an acid-base response among acetic acid and ammonia. In an acid-base response, it's miles crucial to factor out which chemical species are the acid, base, conjugate acid, and conjugate base. In the problem, it most effective desires to pick out the acid reactant and the conjugate base product.
Basically, the acetic acid donates a Hydrogen ion to ammonia to supply the ammonium ion. With this mechanism, we will classify acetic acid as an acid. The conjugate base of the response is the product this is derived from the acid reactant. In this state of affairs wherein acetic acid is the acid reactant, the conjugate base can be the acetate ion. The conjugate base has nearly a comparable chemical method to the acid. It is simply one much less Hydrogen atom as compared to acid. Therefore, the acid reactant is the acetic acid even as the conjugate base reactant is the acetate.
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Answer:
NH3 + HCH3COO --> CH3COO- + NH4+
NH3: base
HCH3COO: acid
CH3COO: conjugate base
NH4+: conjugate acid
Explanation:
We know acetic acid is an acid so that makes ammonia base. An acid donates a proton/,hydrogen so acetic acid will lose a hydrogen and become the conjugate base. Bases gain a proton and become conjugate acids.
problem 8.49 briefly explain how each of the following influences the tensile or yield strength of a semicrystalline polymer and why: (a) molecular weight (b) degree of crystallinity (c) deformation by drawing
(a) The greater interconnectivity of a chains causes the tensile strength to rise with molecular weight.(b) As chain bonding develops, tensile strength rises with the degree of crystallinity.(c) Tensile strength rises when a material is deformed by drawing because the chains realign, increasing overall bonding forces.(d) The concomitant increase is crystallinity and consequently greater bonding causes the tensile strength of the an underformed material to increase with annealing.
How does a semicrystalline polymer's tensile modulus depend on the molecular weight?(A) As the molecular weight of a semicrystalline polymer grows, so does its tensile strength.Increased chain entanglements with higher molecular weights account for this phenomenon.
Would you anticipate polychlorotrifluoroethylene to have tensile strength?Since chlorine has a stronger bond with fluorine than fluorine does with oxygen, we would anticipate polychlorotrifluoroethylene to have higher tensile strength.
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what is a new substance produced by a chemical reaction
Answer:
Chemical change
Explanation:
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei, and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.
Answer:
Product
Explanation:
Pls help this is for my semester exam
This graph shows the melting and boiling points of the alkali metals. Think about Francium, do you think it would have a higher or lower melting/boiling
point than lithium? Why? Can you predict it from the data?
The melting point of francium was thought to be around 8.0 °C (46.4 °F); Additionally, 27 °C (81 °F) is frequently encountered. Due to its radioactivity and extreme rarity, the element's melting point is unknown. 20 1.5 °C (68.0 2.7 °F) was the result of a different extrapolation based on Dmitri Mendeleev's method.
Why is francium so soft to the touch?There are additional electron shells as you move down any group—for instance, Lithium has two shells and Francium has seven—that result in electron shielding. The force of attraction diminishes as it travels further through these shells to the outermost one, resulting in less powerful bonding.
Why do alkali metals have lower melting and boiling points?The weaker each metallic bond becomes, the lower the melting and boiling points become. The iotas in a metal are kept intact by the fascination of the cores to electrons which are delocalized over the entire metal mass.
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Answer please the question is on the image.
The ratio of the atoms of the iridium and the platinum is; 8.86 : 1. Option B
What is the ratio of the number of atoms?We know that the atom is the smallest particle of the substances that can be able to take part in a chemical reaction. We know that in the platinum and the iridium, we both have atoms in the substances and now we would want to get the number of atoms that is in each of the elements.
Number of moles of iridium = 100g/192 g/mol = 0.52 moles
Number of moles of platinum = 900g/195 g/mol= 4.6 moles
Number of atoms in the iridium atom = 0.52 moles * 6.02 * 10^23 atoms
= 1.2 * 10^23 atoms
Number of atoms of platinum = 4.6 moles * 6.02 * 10^23 atoms
= 2.7 * 10^24 atoms
Since we have about 100g of the iridium and about 900 g of the platinum, then we have the that the ratio of the atoms of the elements is;
2.7 * 10^24 atoms: 1.2 * 10^23 atoms
= 8.86 : 1
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What amount of energy is required to change
20.0 g of an unknown substance from -15.0 °C
to 7.0 °C? (More information on the picture!!)
The amount of energy that is required to change 20.0 g of an unknown substance from -15.0 °C to 7.0 °C is q = +49.65 kJ.
What is energy?Energy is the ability to do tasks. It can exist in various forms, including potential, kinetic, thermal, electrical, chemical, and nuclear.
At -15°c, it will be solid, to increase the amount of heat to raise
temp from -15°C to 40°C.
(20.0) (3.3J/g°c) x 15°C) = 330 J.
At -10°C, it is in which phase transformation takes place from sold to wound.
ΔHfue = 0.945 J/gx 20g = 18.93.
After that, it will be in want and it will be in liquid form 40°C.
To 7°C, then.
922 m Cgas 47
=(20g) (1455/g°c) (17)
493005.
Total Energy = q1 + ΔHfus + q2
47 = 7.0°C - 10°C) = 14°C -
2 330J18.95 + 49300J
q = 49648.9 3. 9
q = +49.65 KJ
Therefore, the amount of energy is q = +49.65 KJ.
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the information in the data table above represents two different trials for an experiment to study the rate of the reaction between no(g) and h2(g), as represented by the balanced equation above the table. which of the following statements provides the correct explanation for why the initial rate of formation of n2 is greater in trial 2 than in trial 1? assume that each trial is carried out at the same constant temperature
Compared to trial 1, trial 2, reactant molecule collisions occur more frequently.
What is meant by collision ?If the two molecules A and B are to interact, they must get close enough to each other that some of their current bonds will be broken and space will be left for any new bonds that will be required for the end products to form. A collision is the name given to such a meeting.
The collision theory postulates that the molecules of reactants are hard spheres, and that reactions can only take place when these spheres (molecules) clash with one another.
According to the collision theory, for a reaction to take place, the particles involved must collide the proper way around (with the correct orientation) and with sufficient force to cause the bonds between the reactants to be broken.
The complete question is : 2NO(g)+2H2(g)→N2(g)+2H2O(g)
The information in the data table above represents two different trials for an experiment to study the rate of the reaction between NO(g) and H2(g), as represented by the balanced equation above the table. Which of the following statements provides the correct explanation for why the initial rate of formation of N2 is greater in trial 2 than in trial 1 ? Assume that each trial is carried out at the same constant temperature.
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What would the seasons on Earth be like if Earth did not revolve around the Sun but stayed in one place in relation to the Sun?
Question 4 of 16
What is the product(s) in the reaction below?
2Na(s)+2H₂O(I) → 2NaOH(aq)+H₂(g)
A. 2Na(s)+2H₂O(I)
B. 2H₂(g)
C. 2NaOH(aq)+H₂(g)
D. 2HO₂(I)
The product(s) in the reaction are: NaOH and H₂ (Option C)
How do I determine which is the product?Chemical equations are representations of chemical reactions. All chemical equations has two sides:
Reactants ProductsThe reactants are located on the left side while the products are located on the right side as shown below:
Reactants —> Products
With the above information, we can obtain the products of the reaction given in the question above. This is shown below:
2Na(s ) + 2H₂O(I) → 2NaOH(aq) + H₂(g)
The products are NaOH and H₂
Thus, the correct answer to the question is: 2NaOH(aq) + H₂(g) (Option C)
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For the reaction A+B+C→D+E
, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected:
What is the value of the rate constant k for this reaction?
Answer:
the answer is a
Explanation:
A
because if u add
12. Imagine that you are a particle of a perfume. Describe what happens to you when the bottle is opened and eventually someone smells you on the other side of the room. Your description should include, how you move, what other particles you might meet and where you go.
The process by which the molecules of the gas can be able to move is the process of diffusion.
What is diffusion?We know that according to the Graham's law, the rate of the diffusion of the gas is inversely proportional to the molar mass of the gas. When we open the bottles, the molecules of the perfume would begin to move.
As the bottle is opened, the molecules would escape from the bottle and then be able to travel through the room and get to where you are by the principle of diffusion.
Hence, the movement of the perfume is according to the Graham's law of diffusion in gases.
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Which of the following is NOT a difference in the pathways by which fatty acids are degraded
and synthesized?
A. The location of the process
B. The presence or absence of a double bond
C. The molecule to which the chain being synthesized or degraded is attached
D. The number of carbons added or removed to elongate or shorten the existing fatty acid
chain
The presence or absence of a double bond is not a difference in the pathways by which fatty acids are degraded and synthesized. Therefore, option B is correct.
What is fatty acid ?A fatty acid is an aliphatic carboxylic acid having a saturated or unsaturated aliphatic chain. The majority of fatty acids that are found in nature contain an unbranched chain with an even number of carbon atoms, ranging from 4 to 28.
Triglycerides, cholesterol, and other critical fatty acids—what the medical community refers to as fats that the body cannot produce on its own—store energy, keep us warm, and safeguard our vital organs. They serve as messengers, facilitating the work that proteins do.
Thus, option B is correct.
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Suppose that 3.65 g of HCl are dissolved in 10.0 L of water.
What is the value of [H+]?
Show that [OH-] is 1.00 x 10-12 M.
Explanation:
The value of [H+] can be calculated using the concentration of the HCl solution and the balanced chemical equation for the dissociation of HCl in water:
HCl (aq) + H2O (l) → H3O+ (aq) + Cl- (aq)
The concentration of HCl is 3.65 g / (36.5 g/mol) = 0.1 M
The concentration of H+ ions in the solution can be calculated using the concentration of HCl and the stoichiometry of the dissociation reaction:
[H+] = 0.1 M x (1 mol H+ / 1 mol HCl) = 0.1 M
To show that [OH-] is 1.00 x 10-12 M, we can use the relationship between [H+] and [OH-] in aqueous solutions, which is given by the ion product constant for water (Kw):
Kw = [H+] [OH-] = 1.00 x 10-14
Substituting the value of [H+] that we calculated above, we can solve for [OH-]:
[OH-] = Kw / [H+] = (1.00 x 10-14) / (0.1 M) = 1.00 x 10-12 M
Therefore, the concentration of OH- ions in the solution is 1.00 x 10-12 M.