নিচের প্রতিটি সেটের মধ্যে কোনটি STP-তে বেশি আয়তন দখল করবে? 2g H_(2) বা 16g O_(2) | ...

The volume of 8 g O_(2) at STP is

32 g O_(2) , 2g H_(2) and 28 g N_(2) at S.T.P. occupy separately a volume of

Calculate the mass of sucrose C_(12)H_(22)O_(11) (s) produced by mixing 78 g of C(s), 11 g of H_(2)(g) & 67.2 "litre" of O_(2)(g) at STP according to given reaction (unbalanced) ?

2H_(2)+O_(2)to2H_(2)O 2 g H_(2) and 1 g O_(2) react to form H_(2)O

Calculate the standard enthalpy of the reaction, 2C_(("graphite")) + 3 H_(2(g)) to C_(2) H_(6(g)) Delta H^(@) = ? from the following Delta H^(@) values: (a) C_(2) H_(6(g)) + (7)/(2) O_(2(g)) to 2CO_(2(g)) + 3H_(2) O_((1)) Delta H^(@) = - 1560 kJ (b) H_(2(g)) + (1)/(2) O_(2(g)) to H_(2) O_((1)) Delta H^(@) = - 285.8 kJ (c ) C_(("graphite")) + O_(2(g)) to CO_(2(g)) Delta H^(@) = - 393.5 kJ

From the following data at 25^(@)C , calculate the bond energy of O – H bond: (i) H_(2)(g) to 2H(g), Delta H_(1) = 104.2 kcal (ii) O_(2)(g) to 2O(g), DeltaH_(2) = 118.4 kcal (iii) H_(2)(g) + 1/2 O_(2)(g) to H_(2)O(g), Delta H_(3) = -57.8 k cal