Chem 1711
Name ____________________________________
Quiz 2
September 17, 2014
NA = 6.022 x 1023 mol–1
1.
2.
Provide the missing IUPAC name or chemical formula for each of the following:
Ag3P __________________________________
potassium hydroxide ________________________
HC2H3O2 __________________________________
hypochlorous acid ________________________
SBr4 __________________________________
cobalt (III) hydrogen carbonate ________________________
What are the units of molar mass? Circle the one best answer below.
g
amu/atom
mol/g
3.
Give the number of protons and electrons in a vanadium (V) ion:
4.
Balance the following chemical equation:
amu/mol
g/mol
protons ___________
g/amu
electrons ___________
________ Na2SiF6 (s) + ________ Na (l)  ________ Si (s) + ________ NaF (s)
5.
Give the symbol of one element that will form a monatomic anion with –2 charge.
6.
Which of the following compounds has the greatest percent oxygen by mass? Circle the one best answer below.
7.
___________________
Na3PO4 (molar mass = 164.0 g/mol)
CH3OH (molar mass = 32.04 g/mol)
Al2O3 (molar mass = 102.0 g/mol)
CO (molar mass = 28.01 g/mol)
Nylon-6 is composed of carbon, hydrogen, oxygen, and nitrogen; it is the most common type of nylon. If a 250.0 g
sample of nylon-6 contains 30.95 g N, determine the mass percent nitrogen in the compound.
____________________ %
8.
Determine the mass (in g) of 1 molecule of dinitrogen tetroxide.
____________________ g
9.
Determine the amount (in mol) of chlorine in 173 g of AlCl3 (molar mass = 133.3 g/mol).
____________________ mol
10.
Determine the mass (in g) of 3.095 x 1026 titanium atoms.
____________________ g
11.
Determine the mass (in g) of glucose (C6H12O6; molar mass = 180.2 g/mol) that contains 34.795 g H.
____________________ g
12.
Indicate whether each of the following is True or False:
a.
A compound that forms between iron and iodine will be an ionic compound.
________________
b.
The mass of 1 formula unit of NiSO4 is equal to the mass of 1 mol of NiSO4.
________________
c.
The total number of ions in 2.0 mol KNO3 is equal to the total number of atoms in 2.0 mol CH4. ________________
Chem 1711
Name ____________________________________
Quiz 2
September 17, 2014
NA = 6.022 x 1023 mol–1
1.
What are the units of molar mass? Circle the one best answer below.
g
2.
amu/atom
g/mol
g/amu
mol/g
amu/mol
Nylon-6 is composed of carbon, hydrogen, oxygen, and nitrogen; it is the most common type of nylon. If a 250.0 g
sample of nylon-6 contains 30.95 g N, determine the mass percent nitrogen in the compound.
____________________ %
3.
Indicate whether each of the following is True or False:
a.
The total number of ions in 2.0 mol KNO3 is equal to the total number of atoms in 2.0 mol CH4. ________________
b.
A compound that forms between iron and iodine will be an ionic compound.
________________
c.
The mass of 1 formula unit of NiSO4 is equal to the mass of 1 mol of NiSO4.
________________
4.
Give the symbol of one element that will form a monatomic anion with –1 charge.
5.
Balance the following chemical equation:
________________
________ PCl5 (g) + ________ H2O (l)  ________ H3PO4 (aq) + ________ HCl (aq)
6.
Determine the mass (in g) of 1 molecule of dinitrogen tetroxide.
____________________ g
7.
Give the number of protons and electrons in a manganese (III) ion:
8.
Which of the following compounds has the greatest percent oxygen by mass? Circle the one best answer below.
9.
electrons ___________
Al2O3 (molar mass = 102.0 g/mol)
CO (molar mass = 28.01 g/mol)
Na3PO4 (molar mass = 164.0 g/mol)
CH3OH (molar mass = 32.04 g/mol)
Provide the missing IUPAC name or chemical formula for each of the following:
cobalt (III) hydrogen carbonate ________________________
10.
protons ___________
perchloric acid
________________________
barium hydroxide
________________________
HC2H3O2 __________________________________
PBr3 __________________________________
Ag2S
__________________________________
Determine the mass (in g) of 2.945 x 1025 titanium atoms.
____________________ g
11.
Determine the amount (in mol) of chlorine in 337 g of AlCl3 (molar mass = 133.3 g/mol).
____________________ mol
12.
Determine the mass (in g) of glucose (C6H12O6; molar mass = 180.2 g/mol) that contains 14.950 g H.
____________________ g