The amount of KCl that will remain in solution at 20° C depends on the concentration of the solution and the solubility of KCl at that temperature.
What is solubility?Solubility is the ability of a substance to dissolve in a solvent, such as water or alcohol. It is affected by temperature, pressure, and the presence of other substances. Solubility is a physical property of a substance, and it is an important factor in determining the dissolution rate of a chemical in a given solvent. In general, solubility increases as temperature increases, and solubility decreases as pressure increases. Some substances, such as salt, are more soluble in hot water than in cold water. Other substances, such as sugar, are more soluble in cold water than in hot water. Solubility is also affected by the presence of other substances, such as salts, acids, and bases.
The solubility of KCl at 20° C is approximately 55.8 grams per 100 milliliters of water. Therefore, if the solution has a concentration of 1 gram per 100 milliliters of water, then 55.8 grams of KCl will remain in the solution at 20° C.
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Identify the major product of the following reaction. + Nas ? + 2NaBr Br Br Сь. Сс. Br co
The major product of the chemical equation of 1,4-dibromobutane and sodium sulfide is thiolune and sodium bromide.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
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Does fruit juice react with metal?
Yes, fruit juice react with metal.
Describe a metal.
Hard, lustrous, malleable, fusible, and ductile are all characteristics of metal, a solid material that conducts heat and electricity. The materials that have a propensity to donate electrons are metals.
An extremely active metal is aluminum. It develops a thin layer of aluminum oxide tarnish right away. The water stops the aluminum's reaction with the tarnish because it is mostly waterproof, but orange juice, which contains a moderate acid, can dissolve the tarnish and keep the aluminum's reaction with the liquid going.
Therefore, fruit juice react with metal.
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Dr. Oken is testing you again. He wants to see if you know how the neutrons increase in quantity in relation to how the protons increase in quantity. Choose the best explanation to give him.
a The quantity of neutrons is proportional to the megatron. For everyone megatron there is a neutron trying to bring it up from the bottom of the Pacific Ocean
b The neutrons increase almost as quickly as the protons increase in number though there are often less neutrons than protons in the nucleus
c The neutrons increase in number faster than the protons increase
d The number of neutrons increases at the same exact rate as the protons increase in number. You add one proton and you get one neutron. This is true for the entire periodic table.
For the lighter nuclei up to atomic number 20, the number of neutrons increases at the same exact rate as the protons increase in number. For the heavier nuclei, the increase in the number of neutrons is faster than the protons increase.
What is the neutron-proton ratio?The neutron-proton ratio or N/Z ratio of an atomic nucleus can be described as the ratio of its number of neutrons to its number of protons. Among stable nuclei, the neutron-proton ratio increases with increasing atomic number.
Because electrical repulsive forces between protons with distance are different than strong nuclear force attractions. Proton density in stable larger nuclei should be lower than in smaller stable nuclei.
For each element with atomic number Z up to that of calcium (Z = 20), there exists with N/Z ratio of one, except beryllium (N/Z = 1.25). Uranium-238 has the highest N/Z ratio of 1.587, while lead-208 has the highest N/Z ratio at 1.537.
For the heavier nuclei, the N/Z ratio is greater than 1 so the number of neutrons is greater than the protons.
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2. When water flows over limestone, is dissolved, creating hard water.
O sodium
O chlorine
O carbon
O calcium
The correct option is O calcium
What are all the products created when the hydronium ion and limestone (CaCO3) react? In water, hydrogen ions interact with limestone (CaCO 3). Water always contains them since it goes through autoprotolysis: H + (aq) + OH - = H 2 O (l) (aq) Limestone will react and erode more readily the more acidic the water is.
When limestone is heated (calcined), it produces carbon dioxide and calcium oxide (quick lime). When this CaO, or calcium oxide, is combined with water, lime water (or calcium hydroxide), which releases heat, results. An EXOTHERMIC REACTION has occurred. When limestone and water are together, nothing happens. How does calcite purify water?
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13. Classify each element as a representative element, transition metal, or noble
gas
a. 1s 2s 2p 3s² 3p 3d¹0 4s² 4pº
b. 1s² 25² 2p
3s² 3p 3d 4s²
c. 1s 2s 2p 3s² 3p²
a. radon (Rn) is noble gas with atomic number 86 b. xenon (Xe) is noble gas with atomic number 54. c. neon (Ne) is noble gas with atomic number 10.
How is each element classified as a representative element?a) Francium (Fr) is element with atomic number 87 (87 protons and 87 electrons).
Electron configuration of francium atom: ₈₇Fr 1s²2s²2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p⁶ 7s¹ or [Rn] 7s¹, radon (Rn) is noble gas with atomic number 86.
b) Mercury (Hg) is element with atomic number 80 (80 protons and 80 electrons). Electron configuration of mercury atom: ₈₀Hg 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² or [Xe] 4f¹⁴ 5d¹⁰ 6s², xenon (Xe) is noble gas with atomic number 54.
c) Silicon (Si) is element with atomic number 14 (14 protons and 14 electrons).Electron configuration of silicon atom: ₁₄Si 1s² 2s² 2p⁶ 3s² 3p² or [Ne] 3s² 3p², neon (Ne) is noble gas with atomic number 10.
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What is the mass of a sample of copper (II) Sulfate containing 2.56x10^23 atoms of copper
Please help im confused
The mass of a sample of copper (II) sulfate containing 2.56 x [tex]10^{23[/tex] atoms of copper would be 27.52 grams.
Avogadro's numberAccording to Avogadro, 1 mole of every substance contains 6.022 x [tex]10^{23[/tex] molecules or atoms of the substance.
Following this principle, the amount, in moles. of copper (II) sulfate present in 2.56 x [tex]10^{23[/tex] atoms of the substance would be:
6.022 x [tex]10^{23[/tex] atoms = 1 mole
2.56 x [tex]10^{23[/tex] atoms = 2.56 x [tex]10^{23[/tex] /6.022 x [tex]10^{23[/tex]
= 0.43 mol
Recall that: mass = mole x molar mass
Mass of 0.43 mol copper = 0.43 x 64
= 27.52 grams.
In other words, a sample of copper (II) sulfate containing 2.56 x [tex]10^{23[/tex] atoms of copper will contain 27.52 grams of copper.
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How many valence electrons can d hold?
how can a bent molecular geometry be formed according to vsepr theory? (select all that are correct.) selected answer, tetrahedral electron group geometry with 1 lone pair and 3 bonding groups answer, trigonal planar electron group geometry with 0 lone pairs and 3 bonding groups answer, linear electron group geometry with 1 lone pair and one bonding group answer, tetrahedral electron group geometry with 2 lone pairs and 2 bonding groups answer, trigonal planar electron group geometry with 1 lone pair and 2 bonding groups
According to VSEPR theory, bent molecular geometry can be formed by all given option choices except trigonal planar electron group geometry with 0 lone pairs and 3 bonding groups as lone pair cause bending in molecules.
What is molecular geometry?Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.
It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.
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In order to react particles must be in the correct what ?
Answer:
amount
Explanation:
according to collision theory the particles must be in/ needs the correct orientation and energy to attain reaction.
The theory that explains successful reactions is called the collision theory. The molecules must collide in the correct orientation and with sufficient energy to make a reaction. The reacting particles must undergo forward and reverse movements to react with strength.
If the collision is less, the reaction will not take place. If the colliding particles have more energy, thus the collisions will be successful, and a successful response will occur. The rate of a reaction depends on the successful collisions between reactant particles, the more successful the collision, the faster the reaction.
Examples: if two Ballard balls collide, they bounce off each other. If a reaction between A and B happens, we can see a disruption between their atoms.
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According to collision theory what is needed by particles for reaction?
How many moles of Mg are in MgO?
146.35 × 10²³ atoms of Magnesium are present in 1 mole of Magnesium oxide.
The number of atoms found in a mole of compound is calculated by relationship between the mole and the Avogadro number. The Avogadro number is always constant that has been given by the number 6.023 × 10²³.
The relationship between the atoms and mole is given as,
1 mole = 6.023 × 10²³ atoms.
So, the number of atoms that is present in 1 mole of the MgO is equivalent to the Avogadro number.
Therefore, 1 mole of MgO has 6.023 × 10²³ atoms.
Thus, the atoms of Mg is given as:
Mg atoms = Mass of Mg × Avogadro number
Mg atoms = 24.3g × 6.023 × 10²³
Mg atoms = 146.35 × 10²³
Hence, 1 mole of MgO contains 146.35 × 10²³ atoms of Mg.
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Which type of environmental scientist is likely to study the effects of chemical spills on the environment? a. Hydrologist b. Toxicologist c. Environmental physician d. Ecologist please select the best answer from the choices provided a b c d.
The environmental scientist which is likely to study the effects of chemical spills on the environment is: B. Toxicologist.
What is a toxicologist?
A toxicologist is a type of scientist with a strong understanding of the effects of substances on humans, other living organisms, and the environment. Toxicologists are divided into three major subdivisions:
Environmental toxicologist. They study the effects of toxic chemicals on the natural ecosystems the other organisms belong to.Forensic toxicologist. They perform scientific tests to identify any drugs or chemicals in the body’s fluids or tissue samples.Economic toxicologist. They analyze the harmful effects of chemicals that are intentionally administered to biological issues to achieve the desired result.Learn more about toxicology here https://brainly.com/question/24442473
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What is the purpose of the H+ gradient in the intermembrane space?
The concentration of hydrogen ions inside the intermembrane space is higher than within the matrix as a result of the pumping by hydrogen ions through the innermost membrane.
The area between two or maybe more membranes would be known as the intermembrane gap.
The matrix is much less acidic than that of the intermembrane gap. H+ is transferred from of the matrix towards the intermembrane space through the electron transport chain.
Lipid molecules form a double layer that makes up biological membranes.
The term "molecule" refers to a grouping of two as well as more elements.
MgO, for instance, would be a molecule with the chemical composition 1 atom of magnesium and 1 atom of oxygen.
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calculate the minimum energy required to remove one proton from the nucleus 126c . this is called the proton-removal energy. (hint: find the difference between the mass of a 126c nucleus and the mass of a proton plus the mass of the nucleus formed when a proton is removed from 126c .)
939.067MeV is the energy required to extract a proton from a nucleus.
Calculation:△m= mass of nucleus − mass of proton
= (mass of neutron + mass of proton) - mass of proton
= mass of neutron
= 1.008665amu
E=1.008665 X 931=939.067MeV
How are protons removed from the nucleus?After absorbing a neutron, heavy nuclei can occasionally decay and turn into radioactive nuclei. A proton would ultimately be lost, along with perhaps one or two neutrons.
What is the carbon-12 binding energy per nucleon?For C12 and C13, the binding energy per nucleon is 7.68 MeV and 7.47 MeV, respectively. The power needed to take a neutron out of C13 is Not to worry! Our team has your back.
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What should be the freezing point of aqueous solution containing 17 g of C2H5OH in 1000 g of water KF 1.86 km − 1 )?
The freezing point of the solution can be calculated as 0.6 9.
What is freezing point?Freezing point is the temperature at which a liquid turns into a solid. At the freezing point, the molecules of the liquid have lost enough kinetic energy that they can no longer move freely and they will form a crystal lattice structure. The freezing point of a substance is determined by the pressure of the liquid.
The freezing point of a solution is determined by a colligative property known as freezing point depression. This property states that when a solute is dissolved in a solvent, the freezing point of the solution is lower than that of the pure solvent.
The freezing point depression of an aqueous solution containing 17 g of C2H5OH in 1000 g of water can be calculated using the formula:
T f = K f * m
where T f is the freezing point of the solution, K f is the freezing point depression constant for water (1.86 km -1), and m is the molar concentration of the solution (mass of solute / mass of solvent).
Since the mass of C2H5OH is 17g, the molar mass is 46 g/mol, and the mass of water is 1000 g, the molar concentration can be calculated as:
m = (17 g / 46 g/mol) / (1000g) = 0.370 mol / kg
Thus, the freezing point of the solution can be calculated as:
T f = 1.86 km -1 * 0.370 mol/kg = 0.69.
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What should you do first if overexposure to chemicals is suspected?
Get medical attention as soon as possible. If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. Other measures are usually unnecessary.
What should you do right away if you drop a poison on your skin?If a shower is available, take off any contaminated clothing or jewellery and rinse the chemicals off for least 20 minutes.Avoid getting chemicals in your eyes.Dress the burn.Apply a fresh bandage to the burn.
What occurs if you come into contact with dangerous chemicals?A poisonous substance can have both immediate and long-term impacts on your health.Acute (short-term) effects manifest immediately or shortly after chemical exposure.
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after one more cycle of gaseous diffusion, what is the percentage of 235uf6 in the sample? (in your calculations unrounded values from previous parts should be used.)
The diffusion is ratio is 1.0043 : 1 for the cycle of gaseous diffusion of the 235uf6 in the sample.
Gaseous diffusion enrichment is primarily based totally at the small mass distinction among 235UF6 and 238UF6, this means that that the 235UF6 travels barely greater speedy at a given temperature.
The more velocity of the 235UF6 molecules way that they effect with the membrane greater regularly and are consequently much more likely to byskip thru one of the pores. Gaseous diffusion refers back to the go with the drift of remember whilst there may be a distinction in awareness of the cloth among the indoors of the concrete and the outside environment, or among distinctive areas inside a concrete mass.
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What does Cupid do to Apollo in revenge?
Apollo boasted to Cupid about how much larger his bow was. Apollo was offended, and Cupid hit him with a golden love arrow in retaliation, leading him to fall in love with the first person he saw.
What harm did Eros cause Apollo?Apollo had cracked far too many jokes about Eros. Eros shot Apollo with one of his golden arrows as a kind of retribution, which caused Apollo to fall hopelessly in love with the nymph Daphne.
Is Cupid able to vanquish Apollo?The next action taken by Cupid was something Apollo did not anticipate. The god of love flapped his wings as he soared alongside the god of music. Then, with a "golden arrow with a keen gleaming point," he shot him in the chest.
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Write the net chemical equation for the production of hydrogen from propane and water.
The net chemical equation for the production of hydrogen from propane and water can be written as follows:
C3H8 + 2H2O --> 3H2 + CO2
This equation describes the process of steam reforming, which is a common method of producing hydrogen from hydrocarbons such as propane. In this process, propane is reacted with steam (water vapor) to produce hydrogen and carbon dioxide.
The reactants on the left side of the equation are propane (C3H8) and water (H2O). The products on the right side of the equation are hydrogen (H2) and carbon dioxide (CO2). The coefficients in front of the compounds indicate the number of molecules of each compound that are involved in the reaction.
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The following is a representation of the net chemical equation for the creation of hydrogen from propane and water:
2H₂O + C₃H₈ - 3H₂ + CO₂
This equation covers the steam reforming procedure, which is a typical way to create hydrogen from hydrocarbons like propane. In this procedure, steam (water vapor) and propane are combined to create hydrogen and carbon dioxide.
Propane (C₃H₈) and water are the reactants on the left-hand side of the equation (H₂O). Carbon dioxide (CO₂) and hydrogen (H2) are the byproducts on the right side of the equation (CO₂). The number of molecules of each compound that are involved in the reaction is indicated by the coefficients placed in front of the compounds.
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What is the bulk of a solid?
Answer:
Sugar, starch, minerals, chemicals, colors, fillers, plastic resin, and recycled plastics are examples of bulk solids. These commodities account for more than 80% of all things carried globally.
Explanation:
Copolymers are best described by which one of the following:
Polymers whose molecules are comprised of repeating units of two distinct kinds are the best at describing copolymers.
A polymer that has two or more different monomer species is called a copolymer. Copolymers are a common type of polymer used in industry. Examples include acrylonitrile butadiene styrene, nitrile rubber, and polyethylene-vinyl acetate (PEVA) (ABS). Copolymerization is the process by which a copolymer is created from several types of monomers. a few more polymers. In condensation polymerization, tiny molecules are eliminated together with the polymerization of one or more monomers. From well-known synthetic plastics like polystyrene to natural biopolymers like DNA and proteins that are essential to biological structure and function, polymers come in many shapes and sizes.
Correct question:
Copolymers are best described by which one of the following:
a.monomers
b.polymers
c.elastomers
d.thermosets
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What is the percent composition of Fe2O3?
please help me with stoichiometry
Answer:
2. 6.07 g
3. 38%
Explanation:
2.
2AgNO3(aq) + Na2S(aq) --> Ag2S(s) + 2NaNO3(aq)
molecular mass of AgNO3 is 169.87 g/mol
so converting 7.79 g into mole : 7.79/169.87 = 0.049 mol
2 mol of AgNO3 will produce 1 mole of Ag2S
so 0.049 mole of AgNO3 will produce 0.049/2 = 0.0245 mol of Ag2S
since molecular mass of Ag2S is 247.8 g/mol
=> 0.0245 x 247.8 = 6.07 g
3.
molecular mass of NaBr is 102.894 g/mol
=> 3 gm will have: 3.0 / 102.849 = 0.029 mol
according to the reaction, 1 mole of NaBr will produce 1 mole of HgBr
so 0.029 mol of NaBr will produce 0.029 mol of HgBr
since molecular mass of HgBr is 360.41 g/mol
=> mass = 0.029 x 360.41 = 10.45 g
so actual mass/theoretical mass
4.000/10.45 = 0.382 or 38%
Please double check the calculations. Hope this help.
Can humans survive with carbon dioxide?
Simply put, as the amount of carbon dioxide in a tight space increases, it substitutes for such oxygen your body requires to survive.
What occurs when you only breathe carbon dioxide?A significant amount can replace oxygen in the atmosphere.Reduced oxygen availability can cause symptoms like weariness, emotional instability, clumsiness, fast breathing, and rapid heart rate.
How much time can you last in carbon dioxide?An American Conference on Governmental Industrial Dentists (ACGIH) suggests a TWA Threshold Limit Values (TLV) of 5,000 ppm for 8 hours and a 10-minute ceiling exposure limit of 30,000 ppm.40,000 is seen as being instantly threatening to one's health and life (IDLH value).
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for the ibr2- lewis structure, the number of pairs of nonbonding electrons on the central iodine atom is?
[tex]IBr^{-}_{2}[/tex] has 3 pairs of non-bonding electrons as shown in the picture.
[tex]IBr^{-}_{2}[/tex] has a linear structure and includes three lone pairs of electrons in an equatorial location. This decreases the lone pair repulsions, and the two bromine atoms are in an axial position. Therefore, the structure [tex]IBr^{-}_{2}[/tex] has a linear organization. [tex]IBr^{-}_{2}[/tex] has an iodine atom that possesses two bond pairs as well as three lone pairs of electrons. Both bond pairings are formed using atoms containing two bromines.
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Worksheet if you give the correct answer I will give you brainlist and 100 points
it is mixed with chemistry, Physics, Biology
Answer:
Which option below contains materials that can ALL be put into biogas plant?
D. Water hyacinth, poultry wastes, husk
11. A
12. B
17. D
18. D
16. A
5. B
6. D Sieving
i just follow the numbers in each question, the pictures is not in chronological order..
Explanation:
heart and star pls <3 brainliest will be appreciated <3(っ◔◡◔)っ -{ elyna s }-What do Cupid's lead tipped arrows do?
Cupid has two sets of arrows instead of simply one. One with a lead or silver blunted tip to make someone fall out of love or even despise a person, and one with a barbed golden tip to make people fall in love.
What does the lead arrow of Cupid do?One of Cupid's arrows, or darts, has a pointed tip made of gold, and the other has a blunt lead tip. A person struck by a golden arrow experiences intense desire, whereas a person struck by a lead arrow experiences aversion and just wants to flee.
What do the arrows of Cupid signify?one of the love-inspiring arrows that Cupid is said to shoot from his bow, striking the target and making them fall in love.
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*PLS HELP WILL MAKE BRAINLIST IF U SEND MINDMAP*
Search and find 5 applications of Neutralisation reaction and draw a mind map for the
same.
Neutralization reactions find applications in antacids,industrial process, environmental remediation and also in laboratories and even waste water treatment. These are reactions between an acid and a base.
What is an acid?
Acids are defined as substances which on dissociation yield H+ ions , and these substances are sour in taste. Compounds such as HCl, H₂SO₄ and HNO₃ are acids as they yield H+ ions on dissociation.
According to the number of H+ ions which are generated on dissociation acids are classified as mono-protic , di-protic ,tri-protic and polyprotic acids depending on the number of protons which are liberated on dissociation.
Acids are widely used in industries for production of fertilizers, detergents batteries and dyes.They are used in chemical industries for production of chemical compounds like salts which are produced by neutralization reactions.
Mind map can be drawn by writing neutralization reaction in center with the mentioned applications connected with neutralization reaction.
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1. Is there a difference between normal, dry, and oil shampoo?
2. Benefits of 2-in-1 shampoo and conditioner
Please put the URL (the info you got from)
The difference between normal, dry, and oil shampoo are the forms that they come in. Normal is a liquid. Dry is powder and so solid, while oil shampoo is oily.
The benefits of 2-in-1 shampoo and conditioner include :
Saves time on washing and cleaning hair Is more environmentally sustainable due to less water used What are the benefits of 2-in-1 shampoo and conditioners?A 2 -in-1 saves you time by avoiding the two separate shower stages while also moisturizing and cleansing your hair. Bringing one bottle of 2-in-1 shampoo and conditioner whether you're traveling or showering on the move, for instance, not only saves you time showering but also valuable room in your cosmetics bag."
The sustainability benefit of a 2-in-1 would be its second advantage. In addition to buying fewer things (presumably resulting in less plastic trash), you are also (again, theoretically) using less water in the shower.
Dry shampoo is a powder used for dry cleaning. Ordinary shampoo cleans like soap. Because it is stronger than dry shampoo, regular shampoo is more drying.
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when sodium metal reacts with water (liquid) it produces hydrogen gas and sodium hydroxide. if 73.22 g of sodium metal reacts with excess water, how many liters of h2 gas are produced at stp?
Rapid reaction between sodium metal and water produces colorless sodium hydroxide (NaOH) and hydrogen gas solution (H2). Because there contains hydroxide in the dissolved state, the final solution is basic.
Hydrogen gas and a sodium hydroxide solution are the byproducts of sodium metal's reaction with water. For this reaction, can you build a balanced equation with state symbols?2Na(s)+2H2O(l)→2NaOH(aq)+H2(g).
When sodium water and sodium hydroxide react, what kind of reaction occurs?an exothermic response What form and how does sodium interact with water? Caustic soda, a sodium hydroxide compound with a high alkalinity, and hydrogen gas combine to generate an odorless solution. This reaction is exothermic.
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How many atoms are in Mg?