Question

Calculate the mass percent of carbon in ethanol

Answer 1

Answer:

52.144%

Explanation: Mass of 2 moles of Carbon = 2×12.011 = 24.022 g

Mass of 6 moles of Hydrogen = 6×1.008 = 6.048 g

Mass of 1 mole of Oxygen = 1×15.999 = 15.999 g

Molecular weight of Ethanol = 46.069 g

mass% of Carbon = (24.022 g÷46.069 g)×100% = 52.144%