Chemistry
Calculate the percentage of carbon in a 55% pure sample of carbon carbonate. [Ca = 40, C = 12, O = 16]
Related Questions
Calculate the percentage of pure aluminium in 10 kg. of aluminium oxide [Al2O3] of 90% purity. [Al = 27, O = 16]
State which of the following are better fertilizers —
(i) Potassium phosphate [K3PO4] or potassium nitrate [KNO3]
(ii) Urea [NH2CONH2] or ammonium phosphate [(NH4)3PO4]
[K = 39, P = 31, O = 16, N = 14, H = 1]
Calculate the percentage of water of crystallization in hydrated copper sulphate [CuSO4.5H2O].
[Cu = 63.5, S = 32, O = 16, H = 1]
Hydrated calcium sulphate [CaSO4.xH2O] contains 21% of water of crystallization. Calculate the number of molecules of water of crystallization i.e. 'X' in the hydrated compound.
[Ca = 40, S = 32, O = 16, H = 1]