Advertisements
Advertisements
Question
A certain gas 'X' occupies a volume of 100 cm3 at S.T.P. and weighs 0.5 g. Find its relative molecular mass.
Advertisements
Solution
At STP 100 cm3 of gas weights = 0.5 g
1 cm3 of a gas will weigh = `0.5/100`g
∴ At STP 22400 cm3 of gas will weight = `0.5/100 xx 22400`
= 112 g
APPEARS IN
RELATED QUESTIONS
Potassium nitrate on strong heating decomposes as under :
2KNO3 → 2KNO2 + O2
Calculate : Weight of potassium nitrite formed.
(K = 39, 0 = 16, N = 14)
Concentrated nitric acid oxidizes phosphorous to phosphoric acid according to the following equation :
P + 5HNO3 → H3PO4 + H2O + 5NO2
What mass of phosphoric acid can be prepared from 6 .2 g of phosphorous?
Washing soda has the formula Na2CO3.10H2O.What is the mass of anhydrous sodium carbonate left when all the water of crystallization is expelled by heating 57.2 g of washing soda?
Mention the term defined by the following sentence:
The mass of a given volume of gas compared to the mass of an equal volume of hydrogen.
A metal M, forms a volatile chloride containing 65.5% Chlorine. If the density of the chloride relative to hydrogen is 162.5, find the molecular formula of the chloride. [M = 56, Cl = 35.5]
Give one word or phrase for the following:
Formation of ions from molecules.
Give two tests of the following:
Oxygen
Calculate the relative molecular mass of:
CH3COONa
What do you understand by the statement that ‘vapour density of carbon dioxide is 22’?
A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure. What mass of carbon dioxide can it hold under similar conditions of temperature and pressure?
