Chevron has agreed to buy US oil and gas producer Hess for $53bn.

雪佛龙已同意以 530 亿美元收购美国油气生产商赫斯。

Hess holds a 30% stake in a big oilfield project off the coast of Guyana.

赫斯公司持有圭亚那近海一个大型油田项目30%的股份。

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。

The Hess acquisition would boost Chevron's oil and gas output by more than 10 per cent.

收购赫斯将使雪佛龙的油气产量增加 10% 以上。

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。

Chevron's offer has been challenged by ExxonMobil, which owns a 45% stake in the Guyana project and claims it has the right to negotiate with Hess about the asset.

雪佛龙的报价受到了埃克森美孚的挑战，后者拥有圭亚那项目45%的股份，并声称有权就该资产与赫斯进行谈判。