Calculate the percentage of water of crystallisation in the sample of blue vitriol (CuSO4.5H2O)
Mol. mass of CuSO4.5H2O
No of parts by mass of
= 36.07 %
Chlorine has two isotopes of atomic mass units 34.97 and 36.97. The relative abundances of these two isotopes are 0.755 and 0.245 respectively. Find the average atomic mass of chlorine.
Calculate the molecular mass of glucose (C6H12O6)molecule.
A solution is prepared by adding 2 g of a substance A to 18 g of water. Calculate the mass percent of the solute.
The density of 3 M solution of NaCl is 1.25 g mL–1. Calculate the molalityof the solution.
How many grams of NaOH should be dissolved to make 100 cm–3 of 0.15 M NaOH solution?
Calculate the number of oxalic acid molecules in 100mL of 0.02 N oxalic acid solution.
Calculate the molarity of water if its density is 100 kg/m3
Calculate the percentage of cation in ammonium dichromate.
Calculate the mass of sodium acetate (CH3COONa) required to make500mL of 0.375 molar aqueous solution. Molar mass of sodium acetate is 82.0245 g mol–1.
Calculate the concentration of nitric acid in moles per litre in a sample which has a density, 1.41 g ml–1and mass per cent of nitric acid in it being 69%.