Chapter 10 Practice #1                                                            Name ____________________________________

Complete the following table Show your work and include units

 

Formula

Name

Mass of 1 mole

1

Na2S

 

 

2

NH4Cl

 

 

3

CuF

 

 

4

CuF2

 

 

5

PbSO4

 

 

6

 

Nickel (II) chloride

 

7

 

Copper (II) nitrate

 

8

 

Dinitrogen pentoxide

 

9

 

Sulfurous acid

 

10

 

Hydrosulfuric acid

 

 

Answer the following questions completely. Show your work, include the units and use the correct number of significant figures.

 

These questions will take two steps

11. How many atoms are in 2.3 g of Na?

12. How many molecules are there in 6.8 grams of CO2?

13. How many grams would 6.8 x 1023 formula units of CuCl2 be?

14. How many formula units are there in 8.79 g of K2S?

15. How many molecules are there in 8.8 grams of SO2?

16. How many grams would 4.65 x1022 molecules of N2O4 be?

17. How many formula units are there in 4.11 g of (NH4)2SO3?

 

These questions should take three steps

18. How many atoms are in 2.3 g of NaF?

19. How many atoms are there in 3.7 g of (NH4)3PO4?

20. How many ions are there in 4.5 g of (NH4)3PO4?