Question

45 mg of CO2 and 3.46 mg of water. What is the mass percent of each element in the acid?

Answer 1

CO2 molar mass=44

45mg of CO2=0.045g

Mass percent =$(0.045/44)\times 100$=0.10%

Molar mass of water= 18

3.46 mg of water=0.00346g

Mass percent=$(0.00346/18)\times 100$ =0.019%