give detail explanation please

tion C: Long Questions ( 50 marks) 1. a) i) balance the following equation: aC4H10O(i)+bO2(g)cCO2(g)+dH2O(1) ii) calculate the percentage of carbon (C) in C4H10O iii) calculate the mass of H2O formed when 2g of C4H10O is burn in excess of oxygen (O2) b) Diamond and graphite are allotropes of carbon, Explain why diamond is hard while graphite is soft. c) Metals are widely used in our daily life as they are usually described as substances with high electrical and thermal conductivity as well as malleability. Refer to the structure of metals, explain why iron has the following properties: i) Conduct electricity ii) High density iii) High boiling point iv) Ductile