Embibe Experts Solutions for Exercise 2: Assignment Set-2

How many moles of aluminium sulphate, ${\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3$ will contain $0.24 \mathrm{mole}$ of oxygen atoms?

Which of the following molecule has highest percentage of oxygen by mass?

What is mass of sodium acetate $\left({\mathrm{CH}}_3\mathrm{COONa}\right)$ required to make $200 \mathrm{ml}$ of $0.245 \mathrm{molar}$ aqueous solution? $(\mathrm{Molar} \mathrm{mass} \mathrm{of} {\mathrm{CH}}_3\mathrm{COONa}= 82 \mathrm{g} {\mathrm{mol}}^{-1})$

Molarity of $29\%\left(\frac{\mathrm{w}}{\mathrm{w}}\right) {\mathrm{H}}_2{\mathrm{SO}}_4$ solution whose density is $1.22 \mathrm{g} {\mathrm{ml}}^{-1}$, is

In a reaction $3\mathrm{A}+{\mathrm{B}}_2\to {\mathrm{A}}_3{\mathrm{B}}_2$ If $180$ atoms of $\mathrm{A}$ and $100$ molecules of $\mathrm{B}$ react, then

Copper has two naturally occurring isotopes ${}^{63}\mathrm{Cu}$ and ${}^{65}\mathrm{Cu}$. If the average atomic mass of copper is $63.546 \mathrm{u}$, then natural abundance of lighter isotope of $\mathrm{Cu}$ will be

Out of the following statements choose an incorrect statement regarding compounds

$28 \mathrm{g}$ of ${\mathrm{N}}_2$ and $6 \mathrm{g}$ of ${\mathrm{H}}_2$ react to give $34 \mathrm{g}$ of ${\mathrm{NH}}_3$. This statement illustrates the law of