R R Misra Solutions for Chapter: Atoms and Molecules, Exercise 5: Problems for Proficiency

Calculate the number of ${\mathrm{H}}_2\mathrm{O}$ molecules in 10 moles of water.

Calculate the number of Na atoms in 0.2 mol of sodium.

A dozen of pencils is a collection of _____ pencils. ($\left(6 / 12\right)$

The unit _____ is used to report the amount of chemical substances.

The numerical value of Avogadro number is  $6.022\times {10}^{\mathrm{n}}$. The value of n is _____.

Number of moles of $\mathrm{Cl}$ atoms in one mole of ${\mathrm{CCl}}_4$ is _____.

The molar mass of C atom is _____ g/mol.

The number of molecules in $32 \mathrm{g}$ of oxygen is _____$\times {10}^{23}$.$\left(6.022/6.625\right)$