Problema Solution
Chalk contains 10%calcium,3%carbon and 12%oxygen.find the amount(in grams)of each of these compounds in 1 kg of chalk.
Answer provided by our tutors
mass of calcium = 1kg (0.1) = 0.1kg or 100g
mass of carbon = 1kg(0.03) = 0.03kg or 30g
mass of oxygen = 1kg(0.12) = 0.12kg or 120g