Moles and Gases

A patient Vasu had to survive for a month on artificial respiration before he passed away. A nurse was instructed to give him $7.5 \mathrm{g}$ of glucose per hour for consumption to meet the energy requirement. What volume of carbogen $( 95\% {\mathrm{O}}_2 + 5\% {\mathrm{CO}}_2)$had to be supplied for Vasu assuming that he was kept under the conditions of$27°\mathrm{C}$ and normal atmospheric pressure?

The ratio of nitrogen and oxygen by mass percent in a colorless gas is $7 : 8$. When this colourless gas combines with ${\mathrm{O}}_2$, it produces $44800 {\mathrm{cm}}^3$ of a brown-coloured gas at STP. Find out the number of moles of oxygen that have taken part in the reaction.

Which of the following reactions is associated with same volume ratio as the reaction of formation of ${\mathrm{CO}}_2$ from $\mathrm{CO}$ and ${\mathrm{O}}_2$?

The volume of ${\mathrm{CO}}_2$ liberated at STP on burning $24 \mathrm{g}$ of carbon in excess oxygen is _____.

The number of molecules and moles in $2.8375$ litres of ${\mathrm{O}}_2$ at $\mathrm{STP}$ are respectively

What is the volume of hydrogen formed at STP when $72 \mathrm{gm}$ of water reacts with sodium completly.

The number of nitrogen atoms present in $20$ litre of air containing $78\%$ nitrogen by volume at STP is

What is the mass of $2.24\mathrm{L} {\mathrm{SO}}_2$ gas at $\mathrm{STP}$?

$1 {\mathrm{cm}}^3 {\mathrm{N}}_2\mathrm{O}$ at STP contains

Calculate the number of molecules of oxygen gas that occupies a volume of $224 \mathrm{mL}$ at $273 \mathrm{K}$ and $3 \mathrm{atm}$ pressure.

How many oxygen molecules and oxygen atoms are there in 15 litre oxygen gas at STP.

$600 \mathrm{mL}$ of a mixture of ${\mathrm{O}}_3$ and ${\mathrm{O}}_2$ weighs $1 \mathrm{g}$ at $\mathrm{NTP}$. Calculate the volume of ozone (in mL) in the mixture. (Report your answer in the nearest multiple of 100)

If $1.12 \mathrm{L}$ of an ideal gas weighs $4 \mathrm{g}$ at $1 \mathrm{atm}$ and $273 \mathrm{K}$, also it was found that one molecule of this gas has empirical formula ${\mathrm{S}}_{\mathrm{x}}{\mathrm{O}}_{\mathrm{y}}$ and value of $(\mathrm{x}+\mathrm{y})=4$ then value of $(\mathrm{y}-\mathrm{x})$  is :

Number of atoms in $1 \mathrm{mL}$ of ammonia gas at STP is 

How to calculate volume at N.T.P occupied by $56$g of ammonia molecule?

If the density of methanol is $0.793 \mathrm{g}/\mathrm{mL}$. What is its volume needed for making $2.5\mathrm{L}$ of its $0.25 \mathrm{M}$ solution?

0.44 g of a colourless oxide of nitrogen occupies 224 ml at STP. The molecular formula is

How many numbers of molecules and atoms respectively are present in 2.8 litres of a diatomic gas at STP?