Which is more concentrated, a solution containing 10g of NaCl in 100 g of water OR a solution containing 10 g of NaCl in 90 g of water? How do you know your answer is correct?

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante