Embibe Experts Solutions for Chapter: Mole Concept - 1, Exercise 1: EXERCISE

An oxide of nitrogen gave the following percentage composition : $\mathrm{N}=25.94$ and $\mathrm{O}=74.06$. Calculate the empirical formula of the compound.

Find the density of ${\mathrm{CO}}_2\left(\mathrm{g}\right)$ with respect to ${\mathrm{N}}_2\mathrm{O}\left(\mathrm{g}\right)$.

 Formation of polyethene from calcium carbide takes place as follows :
${\mathrm{CaC}}_2+{\mathrm{H}}_2\mathrm{O}\to \mathrm{Ca}(\mathrm{OH}{)}_2+{\mathrm{C}}_2{\mathrm{H}}_2;$ ${\mathrm{C}}_2{\mathrm{H}}_2 + {\mathrm{H}}_2\to {\mathrm{C}}_2{\mathrm{H}}_4;$ 

$\mathrm{n}\left({\mathrm{C}}_2{\mathrm{H}}_4\right)\to {\left(-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\right)}_{\mathrm{n}}$
Determine the amount of polyethylene possibly obtainable from $64.0 \mathrm{kg} {\mathrm{CaC}}_2$ can be:

The molality of a sulphuric acid solution is $0.2$. Calculate the total weight of the solution having $1000 \mathrm{gm}$ of solvent.

When $170 \mathrm{g} {\mathrm{NH}}_3$ decomposes how many grams of ${\mathrm{N}}_2$ & ${\mathrm{H}}_2$ is produced.

$340 \mathrm{g} {\mathrm{NH}}_3(\mathrm{M}=17)$ when decompose how many litres of nitrogen gas is produced at $\mathrm{STP}$.

$4$ mole of ${\mathrm{MgCO}}_3$ is reacted with $6$ moles of $\mathrm{HCl}$ solution. Find the volume of ${\mathrm{CO}}_2$ gas produced at $\mathrm{STP},$ the reaction is : ${\mathrm{MgCO}}_3+2\mathrm{HCl}\to {\mathrm{MgCl}}_2+{\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}$

$117 \mathrm{gm} \mathrm{NaCl}$ is dissolved in $500 \mathrm{mL}$ aqueous solution. Find the molarity of the solution.