Enough healthy calcium

The relative molecular weight of (1) calcium carbonate is 40+12+16× 3 =100;

(2) The mass ratio of calcium, carbon and oxygen in calcium carbonate = 40:12: (16× 3) =10: 3:12;

(3) The mass of calcium that can be supplemented every day = 0.2g× 2× 4,065,438+000× 65,438+000% = 0.32g;

Answer: (1)100;

(2) 10:3: 12;

(3)0.32 grams;