Embibe Experts Solutions for Exercise 1: EXERCISE

Identify the molecule having empirical formula ${\mathrm{CH}}_2\mathrm{O}$

Which of the following is correct?

Which of the following methods of expressing concentration varies with temperature?

What is the molarity of $\mathrm{NaOH}$ solution if $250 \mathrm{mL}$ of it contains $1 \mathrm{mg}$ of $\mathrm{NaOH}$?

How many mole of sodium chloride present in $250 \mathrm{mL}$ of a $0.50 \mathrm{M} \mathrm{NaCl}$ solution?

$27 \mathrm{g} \mathrm{Al}$ ( at. mass $=27$) will react completely with oxygen equal to

$12 \mathrm{g} \mathrm{Mg}$ (at. mass $=24$) react with dilute mineral add to produce maximum hydrogen equal to

Volume at $\mathrm{NTP}$ of oxygen required to completely burn $1 \mathrm{kg}$ of coal ($100\%$ carbon )$$