Question

what is the mass of 7 moles of carbon dioxide

Answer 1

first calculate the mass of 1 mole of Carbon dioxide(co2)

Molar mass= (Mass of Carbon)+ (Mass of 2 Oxygen atoms)

Mass=12+(2×16)=44g

Hence molar mass of 1mole of Carbon dioxide 44g

Therefore, the mass of 7 moles of carbon dioxide is equal to 7×44=308g.