. A compound X, containing C, H, and O was found to have a relative molar mass of 6o whilst 20.0g of X contained 8.0g of C and 1.33g of H. Calculate the empirical formula

of compound X, and hence determine its molecule formula. show calculation

empirical formula = CH2O

molecular formula = C2H4O2

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

elements make up everything, and they combine to make compounds.

the answer is c