Find the mass of the sediment formed during the interaction. 80 g of 2% sodium carbonate solution

Find the mass of the sediment formed during the interaction. 80 g of 2% sodium carbonate solution with calcium chloride solution.

Given:
m solution (Na2CO3) = 80 g
ω (Na2CO3) = 2%

To find:
m (draft) -?

1) Na2CO3 + CaCl2 => CaCO3 ↓ + 2NaCl;
2) m (Na2CO3) = ω * m solution / 100% = 2% * 80/100% = 1.6 g;
3) n (Na2CO3) = m / M = 1.6 / 106 = 0.02 mol;
4) n (CaCO3) = n (Na2CO3) = 0.02 mol;
5) m (CaCO3) = n * M = 0.02 * 100 = 2 g.

Answer: The mass of CaCO3 is 2 g.