78pts!asap!

question 1: consider the equation:

s+302 → so3

is this equation balanced? why or why not?
(explain, )

question 2: how do you know if a reaction is exothermic?
(explain, )

tysm! (:

Explanation:

1. It is not Blanced. on the right the is 1S and 6O and the left there is 1S and 3O

2.If the energy level of the reactants is higher than the energy level of the products the reaction is exothermic (energy has been released during the reaction). If the energy level of the products is higher than the energy level of the reactants it is an endothermic reaction.

1.solid

2.carbon dioxide

3.helium