Answer:
P = 4.92 atm
Explanation:
Given data:
Number of mole of oxygen = 0.352 mol
Volume of gas = 1.75 L
Temperature = 25°C
Pressure exerted by gas = ?
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
Now we will convert the temperature.
25+273 = 298 K
P × 1.75 L = 0.352 mol × 0.0821 atm.L/ mol.K ×298 K
P = 8.61 atm.L / 1.75 L
P = 4.92 atm
Which of the sets of elements are not in order of increasing force of attraction on the outermost electron in atoms of that element?
Ba < Sr < Ca
Al < P < Cl
F < Cl < Br
Mo < Pd < Sn
Answer:
The set of elements that are not arranged in the order of increasing ionization energy is Mo < Pd < Sn
Explanation:
The force of attraction on the outermost electron of an element can be described by the ionization energy of the element which decreases down a group and increases across a period
1) The given elements Ba, Sr, Ca, are group 2 elements arranged in the order from bottom up, which gives an increasing ionization energy, therefore;
Ba < Sr < Ca is arranged in increasing ionization energy, and therefore, increasing force of attraction of the outermost electron in atoms of the elements
Similarly, Al < P < Cl and Mo < Pd < Sn, are arranged in order of increasing ionization energy
However F < Cl < Br which are arranged from top down of elements in period 17 are arranged in the order of decreasing ionization energy, and therefore, decreasing force of attraction of the outermost electron in atoms of the elements.
The elements that are not arranged in their increasing force of attraction base on the outermost electron present in their atoms is D:
Mo < Pd < Sn.
Ionization energy of an element usually increase when moving along the period and decreases down a group and thus explains the force of attraction on the outermost electron.Option A are arranged in from down to up of group 2, which means they are in increasing order of ionization energy, same thing with option B, C. But option D, doesn't follow the arrangements hence, the correct answer.Therefore , option D is correct.
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How many valence electrons are there in Copper(ll) and copper(lll).
Answer:
Copper typically forms a bluish green solution. Copper (Cu) has two valences Cu I (cuprous) has one valence electron and Cu II (cupric) has two valence electrons.
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Explanation:
The plant on the left is growing more because it has been receiving more water
Observation or inference
Answer:
am not sure i understand but i think it got more chlorophyll
An element that is malleable and a good conductor of heat and electricity could have an atomic number of
Answer:
Copper (atomic number 29)
Explanation:
Copper is a element that is malleable and a good conductor of heat and electricity.
Convert 5.00 g CaC, to moles CaC,
What is a feed back loop?
Answer:A feedback loop is a process in which the outputs of a system are circled back and used as inputs. In business, this refers to the process of using customer or employee feedback (the outputs of a service or product), to create a better product or workplace
Explanation: Becuz ur mom
In the ground state atoms of the elements in group 15 of the periodic table all have the same number of
Answer:
valence electrons
Explanation:
what type of reaction is CO2 + H2O–H2CO3?
A student found the mass of an object to be 5.5 g. The actual mass of the object is 5.3 g. What is the percent error in the measurement?
Answer: 3.6%
5.5 - 5.3 and divide it by 5.5. Then multiply this by 100
Explanation:
This will get you 3.6%
The percent error in the measurement is 3.774%
How do you calculate the percent error?
Subtract one cost from the other: 2.sixty eight - 2.70 = -zero.02.relying on what you need, you may discard any poor sign (take the absolute value): 0.02. that is the mistake.Divide the mistake by using the proper cost:zero.02/2.70 = zero.0074074.Multiply this fee by 100% to attain the percentage of mistakes:What's an example of a percent error?
For an instance, let's assume you guessed that there have been 230 gumballs within the picture, however, there were simply 311 gumballs. The distinction between your wager (230) and the actual wide variety (311) in the evaluation of the actual variety (311) expressed as a percentage is the percentage error.
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1) Write the ionic compound formulas for the element sodium and all the elements in group 6A. Example: Sodium + Oxygen=Na2O
2) Write the ionic compound formulas for the element aluminum and all the elements in group 7A. Example: Aluminum + Fluorine=AlF3
3) Write the ionic compound formulas for the element magnesium and all the elements in group 5A. Example: Magnesium + Nitrogen=Mg3N2
Answer:
See explanation
Explanation:
1) Group 6A elements include; O, S, Se, Te, Po
Na2O, Na2S, Na2Se, Na2Te, Na2Po
2) Group 7A elements include; F, Cl, Br, I, At
AlF3, AlCl3, AlBr3, AlI3, AlAt3
3) Group 5A elements are;
N, P, As, Sb,Bi
Mg3N2, Mg3P2, Mg3As2, Mg3Sb2, Mg3Bi2
Mr. Johnson’s dinner table is 60 inches wide. How wide is his table in feet?
Answer:
his table is 5 feet wide
How many p-orbitals are occupied in a Ar atom?
Answer:
6
Explanation:
p orbital can hold up to six electron. Argon electron configuration will be 1s²2s²2p⁶3s²3p⁶
Explanation:
Quantum mechanics stipulates that for each energy level, the p sub shell contains 3 orbitals, px, py, and pz. These orbitals are oriented in alignment with x, y, and axis.
Someone thought there was water in Beaker C. He drank some and quickly spat out.He said that it was salty. Explain why this happened.
Answer:
He assumed wrongly
Explanation:
It happened this way because the person assumed wrongly.
Most other compounds have the same physical appearance as water especially when in liquid form.
This can be a very tricky one in the laboratory. The sense of taste is not the best way to fathom what a particular compound is made up of. This is the reason why this student or person faced this sort of problem. Water has different properties that can be tested for using simple techniques in the laboratory.Why does warm soda go flat faster than chilled soda?
A. Gas molecules stay dissolved in warm soda.
B. Gas molecules move slower in warm soda.
C. Gas molecules move faster in warm soda.
D. Gas molecules cannot escape in warm soda.
E. Gas molecules stay trapped with the solvent in warm soda.
Answer:
My best guess is c
Explanation:
Answer:
C for plato
Explanation:
In The Lord of the Rings, Frodo and Sam use a rope to rappel down a cliff. The rope was 30 ells long. How high was the cliff in meters if the rope reached the bottom?
Answer:
324 meters
Explanation:
I don't really have an explanation
! !!
A portion of the periodic table is shown below:
Which element has the electron configuration 1s22s22p6?
Argon (Ar)
Chlorine (Cl)
Fluorine (F)
Neon (Ne)
Answer:
here is your answer
Explanation:
the fourth one Neon (Ne) he the configuration given above .
pls make it the brainliest !!!
Answer:
Neon (Ne)
Explanation:
2+2+6=10
If a car travels 600m in 40 seconds how fast is it going?
Answer:
S = d/t s = 400m/ 20 sec = 20m/s
Explanation:
Fill in the blank questions usually require
a. One key word
b. A list of vocabulary words
in the answer.
C. Complete sentences
d. None of these
Please select the best answer from the choices provided
Ο Α
B
С
D
The answer to this question is that: In fill in the blanks, there must be one keyword rather than a full sentence.
What should be filled in fill in the blanks?A Fill in the Blank inquiry comprises of an expression, sentence, or section with a clear space where an understudy gives the missing word or words.
In most cases, it should be filled with one keyword.
Thus, option A is correct.
Find more ifnormation about Keyword here:
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what event typically causes upwelling?
Answer:
Conditions are optimal for upwelling along the coast when winds blow along the shore. Winds blowing across the ocean surface push water away. Water then rises up from beneath the surface to replace the water that was pushed away. This process is known as “upwelling.”
Explanation:
HELP! ONLY HAVE & MINUTES LEFT!
why does "Characteristics of objects in the solar system" supports nebular theory
true or false
the mass of an object changes when it goes through a physical or chemical change
Answer:
True.
But it only changes in physical change.
How?
Explanation:
The chemical reaction produces a new substance with new and different physical and chemical properties. Matter is never destroyed or created in chemical reactions. The particles of one substance are rearranged to form a new substance.
In a physical change, a substance's physical properties may change.
A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
Hope this helps!
Propanoic acid fromula
Answer:
C₃H₆O₂
Explanation:
Propionic acid is a colorless liquid with a sharp rancid odor. Produces irritating vapor. (USCG, 1999)
Salt water is made of water (H2O) and NaCl (salt). Which of these substances is the solute
Answer:
[tex]NaCl[/tex] (salt) is the solute
Water [tex]H_20[/tex] is the solvent
Explanation:
A solute is the substance to be dissolved in a solvent to make a solution.
i think im right but im not sure question 12 i’m timed thxxx
Answer:
Your answer is correct.
Atoms are like letters of the alphabet and the compounds are like they make are like words this sentence:
Ed helper question
Explanation:
This is very correct atoms can be viewed as elements and compounds the words that are made from them.
Elements are distinct substances that cannot be split up into simpler substances. Such substances are only made up of one atom. This can pictured as alphabets also. They are the fundamental units by which words are formed.Compounds are substances composed of two or more kinds of atoms joined together in a definite grouping. They are like words.
Calculate the density of a metal that has a mass of 100 grams and a volume of 350. mL.
Answer:
0.28571428571
Explanation:
m/v = density
i just need the last one
For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.(A) C-C(B) C?C...... (A,B)(C) C?O(D) C-O...... (C,D)bondlengthtitle.gif The length of a covalent bond depends upon the size of the atoms and the bond order.For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.(A) P-Cl(B) Si-Cl...... (A,B)(C) P-I(D) H-I...... (C,D)bondlengthtitle.gif The length of a covalent bond depends upon the size of the atoms and the bond order.For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.(A) Cl-I(B) I-I...... (A,B)(C) P-Br(D) P-Cl...... (C,D)
Answer:
See explanation
Explanation:
In the section A,B
C triple bond O has a higher bond energy. A triple bond is shorter and more difficult to break hence they have a higher bond energy.
For the same reason in the C,D section; C triple bond N has a higher bond energy.
In the next section, the higher the bond order the shorter the bond. Hence C triple bond C is the shortest in the A,B section while C triple bond O is the shortest in the C,D section. Both have a bond order of 3.
In the A,B section; I is larger than Br hence H-Br has the shortest bond length.
In the C,D section; Br is larger than Cl hence P-Cl has the shortest bond length.
Write with example of any three changes in the state of matter in daily life
Answer:
just wait 3 minutes ill tell you the answer cause its in my book
Explanation:
The process by which CO2 gas releases heat energy to become dry ice is called :
evaporation
freezing
deposition
sublimation
i believe its deposition