Question

How much copper can be obtained from 100 g of copper sulphate(CuSO4)? (Atomic mass of Cu =63.5amu) 

Solution

Correct option is

39.81 g

 

1 mol of CuSO4 contains 1 mol (1 g atom) of Cu

Molar mass CuSO4 = 63.5 + 32 + 4 × 16 = 159.5 g mol–1

Thus Cu that can be obtained from 159.5 g of CuSO4 = 63.5 g

∴ Cu that can be obtained from 100 g

SIMILAR QUESTIONS

Q1

The density of 3 M solution of NaCl is 1.25 g mL–1. Calculate the molalityof the solution.

Q2

How many grams of NaOH should be dissolved to make 100 cm–3 of 0.15 M NaOH solution? 

Q3

Calculate the number of oxalic acid molecules in 100mL of 0.02 N oxalic acid solution

Q4

Calculate the molarity of water if its density is 100 kg/m3

Q5

Calculate the percentage of cation in ammonium dichromate.

Q6

Calculate the percentage of water of crystallisation in the sample of blue vitriol (CuSO4.5H2O)

Q7

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

Q8

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%.

Q9

What is the concentration of sugar if its 20 g are dissolved in enough water to make a final volume up to 2 L?

Q10

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?