Reactants become products and that's that.

应物变成产物，仅此而已。

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）进入并阻止重要的应物逸出？

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，它之间有足够的空间供应物移动通过。

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

所以在左这里我有应物。

So here we have the reactants.

所以这里有应物。

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

然后，为我的每种产品和应物插入摩尔数。

The products are also breaking back apart into the reactants.

产物也分解成应物。

And so what are the reactants here?

那么这里的应物是什么？

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

如果你真的提供了更多的应物，你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.

大写字母代表应物和产物，小写字母代表它的系数。

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

那是我的应物之一， 它很容易溶解在水中， 因此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.

一种特定的应物与产物的比例， 其中产物的形成速率与它分解的速率相同。

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

同样，它是应物乘积的乘积， 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，如果您不知道产物和应物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.

如果我提高温度， 就好像添加了一种应物， 这样应就会向右进行。

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

请注意，只有应物用于此，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.

叶子就像植物的食品工厂——它的各个部分一起工作，把应物带到一个地方，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.

家通常不仅知道应的平衡常数，而且知道每种应物的可用量。

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

只要您从相同的应物开始并以相同的产物结束， 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.

该数字对于每个应都是唯一的，表示应处于平衡状态时产物与应物的摩尔比。