Mark and John are lifting weights at the gym. It takes mark 45 N of force to lift one of the weights. If John only got the weight 50% of the way up, how many newtons of force did John exert on the weight? WILL MARK BRAINLIEST

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.

where are the choice options?

catya that's not even a b or c

ok whats the question if not i cannot you i need question and need a thing to answer