Chemistry - Mole Concept Question with Solution | TestHub

Mass of $1\mathrm{g}$ atom of carbon $=12\mathrm{g}$ $3.011\times 10^{23}$ atoms of oxygen $=0.5\mathrm{mol}$ atom $\begin{array}{rl}& =0.5\times 16=5\mathrm{g}\\ & 10\mathrm{ml}{\mathrm{H}}_2\mathrm{O}=10\mathrm{g}{\mathrm{H}}_2\mathrm{O}\\ & \frac{1}{2}\mathrm{mol}{\mathrm{CH}}_4=\frac{1}{2}\times 16=8\mathrm{g}\end{array}$