Match the following
`{:("1. Magnetite",CaSO_(4).2H_(2) O),("2. Dolamite",Mg CI_(2). KCI. 6H_(2) O),("3. Epsom salt",Mg CO_(3) ),("4. Carnallite",Mg CO_(3). Ca CO_(3) ),("5. Gypsum",MgSO_(4).7H_(2) O):}`

Calculate the percentage compostion of various elements in the following compounds: Blue vitriol (CuSO_(4). 5H_(2) O) b. Green vitriol (Fe SO_(4) . 7H_(2) O) c. White vitriol (ZnSO_(4). 5H_(2) O) d. Ethanol (C_(2) H_(5) OH) e. Mohr's salt [(NH_(4))_(2) SO_(4). FeSO_(4). 6H_(2) O]

Balance the following chemical equation : Fe+H_(2)O to Fe_(3)O_(4)+H_(2)

Identify the type of chemical reactions in the following equations : CH_(4)+2O_(2) to CO_(2)+H_(2)O

MgSO_(4).7H_(2)O on heating above 503 K gives :

Calculate the molar mass of the following: (i) H_(2)O , (ii) CO_(2) , (iii) CH_(4)

Calculate the enthalpy of formation of methanol from the following data, CH_(3)OH(l) + (3)/(2)O_(2)(g) rarr CO_(2)(g) + 2H_(2)O(l) ….(i) " "Delta H^(@) = -726.4 kJ mol^(-1) C"(graphite)" + O_(2)(g) rarr CO_(2)(g) ….(iii) " "Delta H^(@) = -393.5 kJ mol^(-1) H_(2)(g) + (1)/(2)O_(2)(g) rarr H_(2)O(l) ....(iii) " "Delta H^(@) = -285.8 kJ mol^(-1) .

Choose the strong acids, from the following CH_(3)COOH, H_(2)SO_(4), H_(2)CO_(3), HNO_(3)

Predict in which of the following reactions, entropy increases/decreases 2NaHCO_(3) rarr Na_(2)CO_(3)(s) + CO_(2)(g) + H_(2)O(g)