Homework 2 Qtr 2 11th - Quiz
- 1. What is the mass of 1 mole of Copper atoms?
A) 29 grams
B) 63.546 grams
C) 2 grams
D) 58.933 grams
- 2. What is the mass of 1 mole of Ba atoms?
A) 56 grams
B) 108.11 grams
C) 2 grams
D) 137.33 grams
- 3. What is the mass of 6.02 x 1023 atoms of Zinc?
A) 65.39 grams
B) 30 grams
C) 10 grams
D) not enough information
- 4. What percent by mass, of oxygen is present in a mole of H2O?
A) 16%
B) 11%
C) 95%
D) 88.89%
- 5. How many atoms of oxygen are in 1 molecule of Cu(SO4)2 ?
A) 2
B) 8
C) 6
D) 4
- 6. How many atoms of K(OH)3
A) 1
B) 3
C) 4
D) not enough information
- 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) NiCl
B) dinickel chloride
C) NiCl2
D) Ni2Cl
- 9. Find the mass of 2 moles of Calcium atoms.
A) 40 grams
B) not enough information
C) 20 grams
D) 80 grams
- 10. Find the percent of Cl atoms by mass, in 1 mole of NaCl.
A) 35.45%
B) 60.65%
C) 50%
D) 58.45 %
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