Name: 
 

Ch 10 -Chemical Quantities - Section 1 & 2



Matching (Value 7)
 
 
Match each item with the correct statement below.
a.
molar volume
b.
molar mass
c.
atomic mass
 

 1. 

the number of grams of an element that is numerically equal to the atomic mass of the element in amu
 

 2. 

the mass of a mole of any element or compound
 

 3. 

the volume occupied by a mole of any gas at STP
 
 
Match each item with the correct statement below.
a.
representative particle
d.
percent composition
b.
mole
e.
standard temperature and pressure
c.
Avogadro's number
f.
empirical formula
 

 4. 

the number of representative particles of a substance present in 1 mole of that substance
 

 5. 

an atom, an ion, or a molecule, depending upon the way a substance commonly exists
 

 6. 

the SI unit used to measure amount of substance
 

 7. 

0ma007-1.jpgC and 1 atm
 

Multiple Choice (Value 23)
Identify the choice that best completes the statement or answers the question.
 

 8. 

What SI unit is used to measure the number of representative particles in a substance?
a.
kilogram
c.
kelvin
b.
ampere
d.
mole
 

 9. 

How many hydrogen atoms are in 5 molecules of isopropyl alcohol, Cmc009-1.jpgHmc009-2.jpgO?
a.
5 mc009-3.jpg (6.02 mc009-4.jpg 10mc009-5.jpg)
c.
35
b.
5
d.
35 mc009-6.jpg (6.02 mc009-7.jpg 10mc009-8.jpg)
 

 10. 

Which of the following is NOT a representative particle?
a.
atom
c.
anion
b.
cation
d.
all of the above
 

 11. 

Which of the following elements exists as a diatomic molecule?
a.
neon
c.
nitrogen
b.
lithium
d.
sulfur
 

 12. 

Avogadro's number of representative particles is equal to one ____.
a.
kilogram
c.
kelvin
b.
gram
d.
mole
 

 13. 

All of the following are equal to Avogadro's number EXCEPT ____.
a.
the number of atoms of bromine in 1 mol Brmc013-1.jpg
b.
the number of atoms of gold in 1 mol Au
c.
the number of molecules of nitrogen in 1 mol Nmc013-2.jpg
d.
the number of molecules of carbon monoxide in 1 mol CO
 

 14. 

How many moles of silver atoms are in 1.8 mc014-1.jpg 10mc014-2.jpg atoms of silver?
a.
3.0 mc014-3.jpg 10mc014-4.jpg
c.
3.0 mc014-7.jpg 10mc014-8.jpg
b.
3.3 mc014-5.jpg 10mc014-6.jpg
d.
1.1 mc014-9.jpg 10mc014-10.jpg
 

 15. 

How many molecules are in 2.10 mol COmc015-1.jpg?
a.
2.53 mc015-2.jpg 10mc015-3.jpg molecules
c.
3.49 mc015-6.jpg 10mc015-7.jpg molecules
b.
3.79 mc015-4.jpg 10mc015-5.jpg molecules
d.
1.26 mc015-8.jpg 10mc015-9.jpg molecules
 

 16. 

How many atoms are in 3.5 moles of arsenic atoms?
a.
5.8 mc016-1.jpg 10mc016-2.jpg atoms
c.
2.1 mc016-5.jpg 10mc016-6.jpg atoms
b.
7.5 mc016-3.jpg 10mc016-4.jpg atoms
d.
1.7 mc016-7.jpg 10mc016-8.jpg atoms
 

 17. 

Butanol is composed of carbon, hydrogen, and oxygen. If 1.0 mol of butanol contains 6.0 mc017-1.jpg 10mc017-2.jpg atoms of hydrogen, what is the subscript for the hydrogen atom in Cmc017-3.jpgHmc017-4.jpgO?
a.
1
c.
6
b.
10
d.
8
 

 18. 

The atomic masses of any two elements contain the same number of ____.
a.
atoms
c.
ions
b.
grams
d.
milliliters
 

 19. 

Which of the following is NOT a true about atomic mass?
a.
The atomic mass is 12 g for magnesium.
b.
The atomic mass is the mass of one mole of atoms.
c.
The atomic mass is found by checking the periodic table.
d.
The atomic mass is the number of grams of an element that is numerically equal to the mass in amu.
 

 20. 

What is true about the molar mass of chlorine gas?
a.
The molar mass is 35.5 g.
b.
The molar mass is 71.0 g.
c.
The molar mass is equal to the mass of one mole of chlorine atoms.
d.
none of the above
 

 21. 

The mass of a mole of NaCl is the ____.
a.
molar mass
c.
molecular mass
b.
atomic mass
d.
gram atomic mass
 

 22. 

What is the molar mass of (NHmc022-1.jpg)mc022-2.jpgCOmc022-3.jpg?
a.
144 g
c.
96 g
b.
138 g
d.
78 g
 

 23. 

The molar mass of Cmc023-1.jpgHmc023-2.jpg and the molar mass of CaCOmc023-3.jpg contain approximately the same number of ____.
a.
carbon atoms
c.
cations
b.
anions
d.
grams
 

 24. 

What is the mass in grams of 5.90 mol Cmc024-1.jpgHmc024-2.jpg?
a.
0.0512 g
c.
389 g
b.
19.4 g
d.
673 g
 

 25. 

What is the number of moles in 432 g Ba(NOmc025-1.jpg)mc025-2.jpg?
a.
0.237 mol
c.
1.65 mol
b.
0.605 mol
d.
3.66 mol
 

 26. 

What is the number of moles of beryllium atoms in 36 g of Be?
a.
0.25 mol
c.
45.0 mol
b.
4.0 mol
d.
320 mol
 

 27. 

How many moles of CaBrmc027-1.jpg are in 5.0 grams of CaBrmc027-2.jpg?
a.
2.5 mc027-3.jpg 10mc027-4.jpg mol
c.
4.0 mc027-7.jpg 10mc027-8.jpg mol
b.
4.2 mc027-5.jpg 10mc027-6.jpg mol
d.
1.0 mc027-9.jpg 10mc027-10.jpg mol
 

 28. 

For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?
a.
volume of gas (STP) to moles
b.
density of gas (STP) to molar mass
c.
mass of any substance to moles
d.
moles of any substance to number of particles
 

 29. 

What is the mass of silver in 3.4 g AgNOmc029-1.jpg?
a.
0.025 g
c.
2.2 g
b.
0.64 g
d.
3.0 g
 

 30. 

What is the mass of oxygen in 250 g of sulfuric acid, Hmc030-1.jpgSOmc030-2.jpg?
a.
0.65 g
c.
16 g
b.
3.9 g
d.
160 g
 

Short Answer (Value 4)
 

 31. 

How many representative particles are in 1.45 g of a molecular compound with a molar mass of 237 g?
 

 32. 

Find the number of moles of argon in 607 g of argon.
 



 
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