Antacid tablets such as tums are mainly calcium carbonate Ca

Antacid tablets, such as tums, are mainly calcium carbonate. Calculate the mass of a tums tablet which contains 1000 mg of calcium.

1000mg of calcium = 1000*0.001g = 1g of calcium

1 moles of CaCo3 contains 1 moles of Ca

1 mole of Ca present in 1 mole of CaCo3

40g of Ca present in 100g of CaCO3

1 g of Ca present in = 100*1/40 = 2.5 g of CaCo3

the mass of a tums tablet is 2.5g or 2500mg