`H_2SO_4` का अणुभार व ऑक्सीजन का प्रतिशत संघटन ज्ञात कीजिए |
[Ca = 40, C = 12, O = 16, H = 1, S = 32, Na = 23, N = 14]

Calculate the relative molecular mass of (NH_4)_2SO_4 . [At mass: C = 12, H = 1,O = 16, CI = 35.5, N = 14, Cu = 63.5, S = 32, Na = 23, K = 39, Pt =195, Ca =40, P=31, Mg = 24]

Calculate the relative molecular mass of CuSO_4 . 5 H_2O [At mass: C = 12, H = 1,O = 16, CI = 35.5, N = 14, Cu = 63.5, S = 32, Na = 23, K = 39, Pt =195, Ca =40, P=31, Mg = 24]

Calculate the relative molecular mass of Ammonium chloroplatinate (NH_4)_2 PtCl_6 . [At mass: C = 12, H = 1,O = 16, CI = 35.5, N = 14, Cu = 63.5, S = 32, Na = 23, K = 39, Pt =195, Ca =40, P=31, Mg = 24]

Calculate the relative molecular mass of CH_4 COONa [At mass: C = 12, H = 1,O = 16, CI = 35.5, N = 14, Cu = 63.5, S = 32, Na = 23, K = 39, Pt =195, Ca =40, P=31, Mg = 24]

Calculate the molecular mass of the N_2SO_4 . 10H_2O Given atomic mass of Na = 23, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32

Find the out the molar masses of the following compounds: Mohr's salt [FeSO_4(NH_4)_2SO_4*6H_2O] ( mass : cu = 63.5, S = 32, O = 16, H = 1, Na= 23, C = 12, Fe = 56, N = 14)

Calculate the mass of 1 mole of each one of the following: (a) NaCl , (b) CaCO_(3) , (c ) FeSO_(4).7H_(2)O , (d) Na_(2)O_(2) (Atomic masses : H = 1 u , C = 12 u, O = 16 u , Na = 23 u , S = 32 u , Cl = 35.5 u , Ca = 40 u, Fe = 56 u )

Calculate the molecular mass of the (NH_4)_2CO_3 . Given atomic mass of Na = 23, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32

Calculate the molecular mass of the Mg_3N_2 . Given atomic mass of Na = 23, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32

200 g of impure Na_(2)CO_(3) of 90% purity is treated with dil. H_(2)SO_(4) according to the reaction Na_(2)CO_(3)+H_(2)SO_(4)toNa_(2)SO_(4)+H_(2)O+CO_(2) Calculate the mass of pure sodium sulphate formed [Na = 23, C = 12, O = 16, H = 1, S = 32]