Question

calculate the weight of oxygen in 100 g of h2o​

Answer 1

Answer:

Number of moles (n) = mass (m) /molar mass (M). Note, RAM [H = 1, O = 16 ] But the molar mass of water = M (H2O) = (2×1) +16 = 18 g/mol. Therefore, n = m/ M = 100/ 18 = 5.556 mol