How many numbers of moles Ca+2 in 1000 mg of CaCO3.?

Answer 1

CaCO₃ → Ca²⁺ + CO₃^2-

As you can see from the above reaction, 1 mole of CaCO₃ contains 1 mole of Ca²⁺ ions.

Use stoichiometry to convert 1000 mg of CaCO₃ to moles of Ca²⁺ ions. However, we need to first convert the mass in mg to g before starting the stoichiometry calculations.

1000 mg x (1 g / 1000 mg) = 1 g

1 g CaCO₃ x (1 mol CaCO₃ / 100.09 g CaCO₃) x (1 mol Ca²⁺ / 1 mol CaCO₃) = 0.01 mol Ca²⁺ (rounded to 1 significant figure)