Question

The total no. of protons in 10g of calcium carbonate is

Answer 1

Total no. of molecules in 10g Calcium carbonate = Moles × Avogadro's no.

Each molecule of calcium carbonate has 
20 + 6 + 24 + 50 protons.

So,
There are 3.0115 × 10²⁴ protons in 10g of calcium carbonate.