Which is correct for 10 g of CaCO 3 ?

Question

Which is correct for 10 g of CaCO 3 ? (A) It contains 1 g atom of carbon (B) It contains 0.3 g atoms of oxygen (C) It contains 12 g of calcium (D) It refers to 0.1 g equivalent of CaCO 3

Tardigrade Admin · Accepted Answer

10 g of CaCO 3 =0.1 mol of CaCO 3 =0.1 × 3 g- atom of Oxygen =0.3 g atoms of oxygen

Q. Which is correct for $10 g$ of $C a C O_{3}$ ?

It contains $1 g$ atom of carbon

It contains $0.3 g$ atoms of oxygen

It contains $12 g$ of calcium

It refers to $0.1 g$ equivalent of $C a C O_{3}$

$10 g$ of $C a C O_{3} = 0.1 m o l$ of $C a C O_{3}$

$= 0.1 \times 3 g$ - atom of Oxygen

$= 0.3 g$ atoms of oxygen

Q. Which is correct for 10g of CaCO3​ ?

It contains 1g atom of carbon

It contains 0.3g atoms of oxygen

It contains 12g of calcium

It refers to 0.1g equivalent of CaCO3​