Se dispone de 300 g de una solución acuosa que contiene 60 g de NaCl. Calcular su concentración en: A- gramos de soluto por 100g de solución(%m/m)
B- gramos de soluto por 100g de solvente

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

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.