Calculate the molecular masses of the following compounds :
(a) Hydrogen sulphide, `H_(2)S` , (b) Carbon disulphide, `CS_(2)`
(Atomic masses : `H = 1 u , S = 32 u , C = 12 u`)

calculate the molecular mass of the following in u. NH_3

calculate the molecular mass of the following in u. C_2 H_5 OH

Calculate the molecular masses of the following compounds : (a) Methane, CH_(4) , (b) Ethane, C_(2)H_(6) , (c ) Ethane, C_(2)H_(4) , (d) Ethyne, C_(2)H_(2) (Atomic masses: C = 12 u , H = 1 u )

Convert 22 g of carbon dioxide (CO_(2)) into moles. (Atomic masses : C = 12 u, O = 16 u )

Calculate the molecular masses of the following : (a) Hydrogen, H_(2) , (b) Oxygen, O_(2) , (c ) Chlorine, Cl_(2) , (d) Ammonia, NH_(3) , (e ) Carbon dioxide, CO_(2) (Atomic masses : H = 1 u, O = 16 u , Cl = 35.5 u , N = 14 u , C = 12 u )

Calculate the mass in grams of 0.17 mole of hydrogen sulphide , H_(2)S . (Atomic masses : H = 1 u, S = 32 u )

Calculate the molecular masses of the following: (i) C_(12)H_(22)O_(11) , (ii) Al_(2)(SO_(4))_(3) Given atomic masses : C = 12.0 u, H= 1.0 u, O = 16.0 u, Al = 27.0 u, S = 32.0 u

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 sulphuric acid (H_(2)SO_(4)) . (Given : Atomic masses : H = 1 , S = 32 u , O = 16 u ).