Reactants become products and that's that.

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入侵者（如细菌）进入并阻止重要物逸出？

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，它们之间有足够空间供物移动通过。

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

所以在左这里我们有物。

So here we have the reactants.

所以这里有物。

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

然后，为我们每种产品和物插入摩尔数。

The products are also breaking back apart into the reactants.

产物也分解成物。

And so what are the reactants here?

那么这里物是什么？

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

如果你真提供了更多物，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.

大写字母代表物和产物，小写字母代表它们系数。

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

那是我们物之一， 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.

一种特定物与产物比例， 其中产物形成速率与它们分解速率相同。

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

同样，它是物乘积乘积， 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物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， 就好像添加了一种物， 这样就会向右进行。

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

请注意，只有物用于此，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.

叶子就像植物食品工厂——它各个部分一起工作，把物带到一个地方，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.

化学家通常不仅知道平衡常数，而且知道每种物可用量。

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

只要您从相同物开始并以相同产物结束， 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.

该数字对于每个都是唯一，表示处于平衡状态时产物与物摩尔比。