- 1. What is the mass of 1 mole of Copper atoms?
A) 58.933 grams
B) 29 grams
C) 2 grams
D) 63.546 grams
- 2. What is the mass of 1 mole of Ba atoms?
A) 56 grams
B) 137.33 grams
C) 2 grams
D) 108.11 grams
- 3. What is the mass of 6.02 x 1023 atoms of Zinc?
A) not enough information
B) 30 grams
C) 65.39 grams
D) 10 grams
- 4. What percent by mass, of oxygen is present in a mole of H2O?
A) 88.89%
B) 11%
C) 95%
D) 16%
- 5. How many atoms of oxygen are in 1 molecule of Cu(SO4)2 ?
A) 8
B) 2
C) 6
D) 4
- 6. How many atoms of K(OH)3
A) not enough information
B) 1
C) 4
D) 3
- 7. Find the molar mass of the compound C2H8?
A) 18 g/mol
B) 8 g/mol
C) 24 g/mol
D) 32 g/mol
- 8. What is the correct formula for the compound Nickel (II) Chloride?
A) dinickel chloride
B) NiCl
C) Ni2Cl
D) NiCl2
- 9. Find the mass of 2 moles of Calcium atoms.
A) not enough information
B) 20 grams
C) 40 grams
D) 80 grams
- 10. Find the percent of Cl atoms by mass, in 1 mole of NaCl.
A) 35.45%
B) 50%
C) 58.45 %
D) 60.65%
|