During the experiment, the data given below was recorded

Volume of water 450cm3

Initial temperature of water 250C

Final temperature of water 46.50C

Mass of ethanol + lamp before burning 125.5g

Mass of ethanol + lamp after burning 124.0g

Calculate the

(a) Heat evolved during the experiment (Density of water = 1g/cm³), specific heart capacity of water = 4.2 Jg^-1 k^-1) ( 2 mks)

(b) Molar heat of combustion of ethanol (C= 12.0, O = 16.0, H = 1.0) ( 2 mks)

(c) Write the equation for the complete combustion of ethanol ( 1 mk)

(d) The vale of the molar heat of combustion of ethanol obtained in (b) (ii) above is lower than the theoretical value. State two sources of error in the experiment