KNEC KCSE Chemistry Paper 2 Question Paper 2015
KNEC KCSE Chemistry Paper 2 Question Paper / 2015 KCSE Starehe Boys Centre Mock 2015 KCSE Starehe Boys Centre Mock Chemistry Paper 2 Answer all questions 1. (a) When 45 g of ethane gas were completely burnt in air 4680 kJ of heat energy was evolved. i) Calculate the molar enthalpy of combustion of ethane. … Read more