The Decomposition Of A Certain Mass CaCO3 gave 11.2 Dm3 of CO2 gas At STP. The Mass Of KOH Required To Completely Neutralize The Gas Is 

116 mg of a compound on vaporisation in a victor Meyer’s apparatus displace 44.8 mL of air measured at STP. The molecular weight of the compound is  

100 g CaCO₃ is treated with 1 litre of 1 N HCl. What would be the weight of CO₂ liberated after the completion of the reaction? 

If we consider that , in place of , mass of carbon atom is taken to be relative atomic mass unit, the mass of one mole of a substance will

For the formation of 3.65 g of hydrogen chloride gas, what volumes of hydrogen gas and chlorine gas are required at N.T.P. conditions? 

An alkaloid contains 17.28% of nitrogen and its molecular mass is 162. The number of nitrogen atoms present in one molecule of the alkaloid is

If 30mL H₂ and 20mL of O₂ react to form water, what is left at the end of the reaction? 

How many moles of magnesium phosphate, Mg₃(PO₄)₂ will contain 0.25 mole of oxygen atoms?

1.520 g of hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent weight of the metal is 

The number of g-atom of oxygen in  CO molecules is

500 mL of NH₃ contain  molecules at S.T.P. How many molecules are present in 100 mL of CO₂ at S.T.P.?