In real life, it's rare to work with a single pure liquid — usually, we deal with liquids that are mixtures of several different component substances. Some of the most common of these mixtures are created by dissolving a small amount of a certain chemical called a solute in a large amount of a chemical called a solvent to create a solution. In these cases, it's useful to know an equation called Raoult's Law (named for physicist François-Marie Raoult), which looks like this: Psolution=PsolventXsolvent. In this formula, the variables refer to;   Psolution: The vapor pressure of the entire solution (all of the component parts combined)  Psolvent: The vapor pressure of the solvent  Xsolvent: The mole fraction of the solvent. Don't worry if you don't know terms like "mole fraction" — we'll explain these in the next few steps. Before you calculate the vapor pressure of a mixed liquid, you need to identify the substances with which you are working. As a reminder, a solution is formed when a solute is dissolved in a solvent — the chemical that dissolves is always the solute and the chemical that does the dissolving is always the solvent.  Let's work through a simple example in this section to illustrate the concepts we're discussing. For our example, let's say that we want to find the vapor pressure of simple syrup. Traditionally, simple syrup is one part sugar dissolved in one part water, so we'll say that sugar is our solute and water is our solvent.  Note that the chemical formula for sucrose (table sugar) is C12H22O11. This will be important soon. As we saw in the Clausius-Clapeyron section above, a liquid's temperature will affect its vapor pressure. In general, the higher the temperature, the greater the vapor pressure — as the temperature increases, more of the liquid will evaporate and form vapor, increasing the pressure in the container. In our example, let's say that the simple syrup's current temperature is 298 K ( about 25 C). Chemical reference materials usually have vapor pressure values for many common...

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Write a summary of the previous text in Vietnamese:
Viết Định luật Raoult. Phân biệt dung môi và chất tan trong dung dịch. Tìm nhiệt độ của dung dịch. Tìm áp suất hơi của dung môi. Tìm phần mol của dung môi. Giải tìm kết quả.