What is the concentration of sugar if its 20 g are dissolved in enough water to make a final volume up to 2 L?
Molar mass of sugar
No. of moles in 20 g of sugar
= 0.0293 mol L–1 = 0.0293 M
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 percentage of water of crystallisation in the sample of blue vitriol (CuSO4.5H2O)
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%.
How much copper can be obtained from 100 g of copper sulphate(CuSO4)? (Atomic mass of Cu =63.5amu)
If the density of methanol is 0.793 kg L–1, what is its volume needed for making 2.5 L of its 0.25 M solution?