Question # What is correct for ( 10 mathrm{g} ) of ( mathrm{CaCO}_{3} ) -

# What is correct for ( 10 mathrm{g} ) of ( mathrm{CaCO}_{3} ) -

(A) It contains ( 1 mathrm{g} ) -atom of carbon

(B) It contains 0.3 g-atoms of oxygen

(C) It contains 12 g of calcium

(D) None of these

Solution

Mole of (CuCO_{3}) in 10g = (frac{10}{100} = 0.1)

in 1moles (CaCO_{3} - 3mole 0)

in 0.1 mol ( " " - 0.3 " 0)