Calculate the mass of salt formed by the reaction of 10 grams of calcium with hydrochloric acid?

Let’s write the reaction equation:
Ca + 2HCl = CaCl 2 + H2
According to the conditions of the problem, calcium is 10 g. One mole of this substance is involved in the reaction. The mass of one mole of calcium according to the periodic table is 40 g.
We consider the molar mass of the resulting one mole of salt. We also take the data from the periodic table. 40+ 2 * 35.5 = 111g.
We make a proportion of 40 g of calcium, 111 g of salt will turn out, respectively, from 10 g it is four times less.
111 * 10/40 = 27.75 g.