Record all data and results of calculations to the proper number of significant figures for items 1

through 7. Be sure to include units for each number.

R

§.

3.

4.

5.

6.

7.

8.

Data

Compound A

Mass of Compound: 2.523g

Mass of copper:

1.1755

1.348g

53.43%

Mass of chlorine:

Percent of copper:

Percent of chlorine:

Compound B

Calculations:

1.833

_.9960

Mass Ci/Mass cu:

Ratio of the mass of chlorine combining with one gram of copper in Compound A to that in

Compound B (express as decimal fraction):

Circle the following small integer ratio that most nearly equals your line 7 ratio.

1:3, 1:2, 2:3, 1:1, 3:2, 2:1, 3:1