Question

The total number of protons in 10 g of calcium
carbonate is (NA
= 6.023x1023 (Given atomic
number Ca=20, gram atomic mass Ca=40g)
(1) 3.01x1024
(2) 4.06x1024
(3) 30.1x1024
(4) 3.01x1023​

Answer 1

Answer:

Explanation: In one mole of calcium carbonate i.e. CaCO3

No.of protons =20 +6+(3×8)=50

So, 100g of CaCO3 has 50 protons (as gram atomic mass of calcium carbonate is 100g)

So, in 10 g CaCO3 contains no. Of protons equal to( 50÷100)×10=5