C. a. 46.7
b. 30.4
c. 32.6
d. 16.
7. How many carbon atoms are contained in 5.50 g of ethane, C2H6?
a. 2.75 x 10-22 b. 3.29 X 1024
1.10 x 1023
d. 2.2
8.) How many moles are contained in 42.0 grams of copper (symbol Cu)?
a. 12.1
b. 0.826
c. 1.18
d. 0.6
9. If you have 3.011x102 atoms of carbon, what would you expect its mass to be?
la. 12.01g
b. 6.005g
c. 3.003g
d. 1.00
0. Which of the following subshells has the higher energy?
a. 45
c. 4d
1. The maximum number of electrons that can occupy a 3d subshell is
a. 2
b. 4
c. 6
d. 10
2. How many electrons are in the outer shell of element 15?
a. 5
b. 3
c. 15
d. 2
b. 4p
d. 4f