Question

Consider 81.0 g samples of two different compounds consisting of only carbon and oxygen. Compound 1 consists of 22.1 g of carbon, and compound 2 has 34.7 g of carbon. Determine the ratio in whole numbers of the masses of carbon that combine with 1.00 g of oxygen between the two compounds.

Answer 1

Compound 1: CO2

Compound 2: CO

Step-by-step explanation:

The attachment illustrrates the calculations. The masses of both C and O are converted into moles of those two elelements and the resulting mole values are taken as ratios of the two elements. Compound 1 has twice as many moles of O as of C, so it's empirical formula must be CO2. Compound 2's O/C ratio is 1, so it becomes CO.