S P Singh Solutions for Chapter: Mole Concept and Stoichiometry, Exercise 2: EXERCISE-5B

Calculate the mass of nitrogen supplied to soil by $5 \mathrm{kg}$ of urea $\left[\mathrm{CO}{\left({\mathrm{NH}}_2\right)}_2\right]. [\mathrm{O}=16;\mathrm{N}=14;\mathrm{C}=12;\mathrm{H}=1].$

Calculate the volume occupied by $320 \mathrm{g}$ of sulphur dioxide at STP. $[\mathrm{S}=32;\mathrm{O}=16].$

What do you understand by the statement that 'vapour density of carbon dioxide is $22$' ?

Atomic mass of chlorine is $35.5$. What is its vapour density?

What is the mass of $56 {\mathrm{cm}}^3$ of carbon monoxide at STP? $[\mathrm{C}=12;\mathrm{O}=16]$.

Determine the no. of molecules in a drop of water which weighs $0.09 \mathrm{g}.$

The molecular formula for elemental sulphur is ${\mathrm{S}}_8$. In a sample of $5.12 \mathrm{g}$ of sulphur. How many moles of sulphur are present?

The molecular formula for elemental sulphur is ${\mathrm{S}}_8$. In a sample of  $5.12 \mathrm{g}$ of sulphur. How many molecules and atoms are present?