Shareholders in Hess, an energy exploration company, approved a controversial 53bn dollars takeover by Chevron.

能源勘探公司赫斯的股东批准了雪佛龙一项有争议的530亿美元收购交易。

First, we'll find the enthalpy change using Hess's Law and standard enthalpies of formation.

首先， 我们将使用赫斯定律和标准生成焓求出焓变。

Second, let's look at Hess' Law and figure out what our products are and what our reactants are and stick them in.

其次，让我们看看赫斯定律， 弄清楚我们的产品是什么， 我们的反应物是什么， 然后把它们贴进去。