Use the data given in the following table to calculate the molar mass of naturally occurring argon isotopes:-
|Isotope||Isotopic molar mass||Abundance|
Molar mass of argon
`=[0.121 +0.024+39.802]" gmol"^-1`
= 39.947 gmol–1
Calculate the amount of carbon dioxide that could be produced when 1 mole of carbon is burnt in air.
Calculate the concentration of nitric acid in moles per litre in a sample which has a density, 1.41 g mL–1and the mass per cent of nitric acid in it being 69%.
Calculate the mass of sodium acetate (CH3COONa) required to make 500 mL of 0.375 molar aqueous solution. Molar mass of sodium acetate is 82.0245 g mol–1
- null - Mole Concept and Molar Masses