Reactants become products and that's that.

反应变成产，而已。

But how does the leaf prevent unwanted intruders, like bacteria from getting in and stop important reactants from escaping?

但是，叶子要如何防止不必要的入侵者（如细菌）进入并阻止重要的反应逸出？

Below that is the spongy mesophyll, which have plenty of space in between them for reactants to move through.

下面是海绵状中叶，它们之间有足够的空间供反应移动通过。

So over here on the left-hand side we have the reactants.

所以在左这里我们有反应。

So here we have the reactants.

所以这里有反应。

Then, plug in the number of moles for each of our products and reactants.

然后，为我们的每种产品和反应插入摩尔数。

The products are also breaking back apart into the reactants.

产也分解成反应。

And so what are the reactants here?

那么这里的反应是什么？

If you actually provide more reactants, you're gonna go more in that direction.

如的提供了更多的反应，就会朝着那个方向走得更多。

The capital letters stand for the reactants and the products and the lowercase letters stand for their coefficients.

大写字母代表反应和产，小写字母代表它们的系数。

That was one of our reactants and it dissolves readily in water, hence the oceans.

那是我们的反应之一， 它很容易溶解在水中， 因很容易溶解在海洋中。

One particular ratio of reactants to products where the products form at the same rate that they break down.

一种特定的反应与产的比例， 其中产的形成速率与它们分解的速率相同。

So again, it's the product of the products of the product of the reactants and the coefficients become exponents.

同样，它是反应乘积的乘积， 系数变成指数。

But what if you don't know the standard free energies of formation for the products and reactants?

但是，如您不知道产和反应的标准生成自由能怎么办？

If I raise the temperature, it's like adding a reactant so the reaction will proceed to the right.

如我提高温度， 就好像添加了一种反应， 这样反应就会向右进行。

Notice that only the reactants are used for this not the products.

请注意，只有反应用于，而不是产品。

A leaf is like a plant's food factory — and its parts work together to get the reactants into one place so that photosynthesis can happen.

叶子就像植的食品工厂——它的各个部分一起工作，把反应带到一个地方，这样就可以进行光合作用。

Chemists often know not only the equilibrium constant for a reaction, but also how much of each reactant is available.

化学家通常不知道反应的平衡常数，而且知道每种反应的可用量。

As long as you start with the same reactants and end with the same products, the enthalpy change is the same.

只要您从相同的反应开始并以相同的产结束， 焓变就相同。

This number is unique for every reaction and represents a molar ratio of products over reactants when a reaction is at equilibrium.

该数字对于每个反应都是唯一的，表示反应处于平衡状态时产与反应的摩尔比。