Mole Concepts Questions

10 mL of gaseous hydrocarbon on combustion give 40 mL of CO₂(g) and 50 mL of H₂O (vap.). The hydrocarbon is -

Calculate the weight of lime (CaO) obtained by heating 200 kg of 95% pure lime stone (CaCO₃).

How many moles of potassium chlorate to be heated to produce 11.2 litre oxygen

The density of O₂ at NTP is 1.429g / litre. Calculate the standard molar volume of gas-

Calculate the mass in gm of 2g atom of Mg

Density of a 2.05 M solution of acetic acid in water is 1.02 g mL⁻¹. The molality of the solution is