O quadro abaixo apresenta o número de prótons, nêutrons e elétrons de quatro espécies químicas Escreva o íon que cada espécie forma:

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as

In the diagram here that represents the reaction, which reactant, a or b, is the limiting reagent?