The density of the solution is 2.15 g mL$$-$$1, then mass of 2.5 mL solution in correct significant figures is :
What fraction of Fe exists as Fe(III) in Fe0.96O ?
(Consider Fe0.96O to be made up of Fe(II) and Fe(III) only)
In one molal solution that contains 0.5 mole of a solute, there is
What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction?
CaCO3(s) + 2HCl(aq) $$\to$$ CaCl2(aq) + Co2(g) + 2H2O(l)
[Calculate upto second place of decimal point]