Heena Sharma, Shubhankat Vats and, Rashmi Gupta Solutions for Chapter: Atoms and Molecules, Exercise 5: CHAPTER EXERCISE

Calculate the mass of the following:
$2$ moles of potassium bromide.

Calculate the mass of the following:
$10$ moles of hydrogen cyanide.

Calculate the mass of the following:
$2$ moles of methane.

Calculate the mass of the following:
$7$ moles of sulphuric acid.

Name a greenhouse gas with molar mass $44 \mathrm{g} \mathrm{m}\mathrm{o}{\mathrm{l}}^{-1}$ and is known to extinguish the fire.

A greenhouse gas with a molar mass $44 {\mathrm{gmol}}^{-1}$ is known to extinguish the fire. Name the elements present in this gas and write their valency.

A greenhouse gas with a molar mass $44 {\mathrm{gmol}}^{-1}$ is known to extinguish the fire. Calculate the number of moles in $360\mathrm{}\mathrm{g}$ of this gas sample.

A greenhouse gas with a molar mass $44{\mathrm{gmol}}^{-1}$ is known to extinguish the fire. Calculate the number of molecules in $88\mathrm{}\mathrm{g}$ of this gas sample.
$\left[\mathrm{G}\mathrm{i}\mathrm{v}\mathrm{e}\mathrm{n}, \mathrm{a}\mathrm{t}\mathrm{o}\mathrm{m}\mathrm{ic} \mathrm{m}\mathrm{a}\mathrm{s}\mathrm{s}\mathrm{e}\mathrm{s} \mathrm{o}\mathrm{f} \mathrm{C}=12\mathrm{u},\mathrm{O}=16\mathrm{u},{\mathrm{N}}_{\mathrm{A}}=6.022\times {10}^{23}\mathrm{p}\mathrm{e}\mathrm{r} \mathrm{m}\mathrm{o}\mathrm{l}\mathrm{e}\right]$