What is correct for 10 g of (CaCO\_3) ? | Chemistry | SolveeIt

What is correct for 10 g of $CaCO_3$ ?

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 $CaCO_3$

Answer

It contains 0.3 g atoms of oxygen

Explanation

$10\,g$ of $CaCO_{3}=\frac{10}{100}$ $=0.1\,g$ mol of $CaCO_{3}$ $=0\cdot1 \times 3$ g-atom of oxygen $=0\cdot3\,g$ atoms of oxygen

Chemistry Question on Some basic concepts of chemistry