Question

Under certain conditions, the substances carbon (graphite) and oxygen combine to form carbon dioxide. If 23.0 grams of carbon (graphite) and 61.3 grams of oxygen combine to form carbon dioxide, how many grams of carbon dioxide must form? grams carbon dioxide Submit Answer Retry Entire Group 9 more group attempts remaining

Answer 1

the balanced equation is as follows

C + O2 -------------------> CO2

no of moles = mass / molar mass

for C = 23g / 12 g/mol => 1.916 moles

for O2 = 61.3 g / 32g/mol => 1.915625 moles

here the less no of moles are O2 and acts as limiting reactant and the moles of CO2 is 1.915625 moles

mass of CO2 => 1.915265 mol * 44 g/mol => 84.2875 grams

answer => 84.3 g of CO2