8B. Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 2.70 moles of magnesium perchlorate, Mg(ClO4)2. Express the number of moles of Mg, Cl, and O atoms numerically, separated by commas.

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

Qrepresents joules in the formula

They cool it down and aluminum cools easily

Answerionic bond imfs are stronger than covalent;