Molecular (molar) mass calculator

Molar (molecular) mass: Mr(CO₂) = Ar(C) × 1 + Ar(O) × 2 = 12.01 × 1 + 16 × 2 = 44.01 (g/mol);

Amount of substance: n(CO₂) = N(CO₂) ÷ N_A = 25 × 10²³ ÷ 6.02 × 10²³ = 4.15 (mol);

Total mass: m(CO₂) = Mr(CO₂) × n(CO₂) = 44.01 × 4.15 = 182.64 (g);

ω (C) = Ar(C) × n ÷ Mr(CO₂) × 100% = 12.01 × 1 ÷ 44.01 × 100% = 27.29%;

ω (O) = Ar(O) × n ÷ Mr(CO₂) × 100% = 16 × 2 ÷ 44.01 × 100% = 72.71%;