the reaction is exothermic.
a net release of energy from the reacting
substances into the surroundings makes
this an exothermic reaction.
the equation shows that 891 kj of energy
are released as a product.
the graph shows that the reactants have
greater potential energy than the products.
this means the difference in energy is
released to the surroundings.
explanations: - as per the significant figures rule, in multiplication and division, we go with least number of sig figs.
4.03 has three sig figs where as 0.0000035 has two sig figs only, the zeros in this number are not sig figs as they are just holding the place values. as the least number of sig figs here is two, the answer needs to be reported with two sig figs only.