29. A person requires 2870 Kcal of energy for leading a normal life. If heat of combustion of cane sugar is -1349 Kcal then he must consume……kg of cane sugar daily. a.224 b.728 c.448 d.142
Correct option is A) Molar mass of cane sugar (C 12 H 22 O 11 ) is 342.2965 g/mol The Heat of combustion reaction for sugar. For 1 mol it is -1349 Kcal. For 2870 Kcal total moles would be = 2870/1349 = 2.127 moles. Weight of sugar =2.127×342=727.6=728g
