?1. 三氧化鉬是一種無機化合物，化學式為MoO3，分子量為143.94。它是一種白色或黃色的固體，具有強烈的氣味。它在自然界中以礦物形式存在，也可以通過加熱鉬精礦來制備。

2. 三氧化鉬具有高度的穩定性和耐腐蝕性，在高溫下也不易揮發。它具有良好的光學性能，可以用作顏料和著色劑。此外，它還具有良好的電學性能，在電子器件中廣泛應用。

3. 三氧化鉬主要用于制備其他鉬化合物，如鉬酸鹽、鉬酸銨等。它也可以用作催化劑，廣泛應用于石油加工、合成氨和硫酸生產等工業領域。此外，它還可以用于制備陶瓷材料、涂料和防腐劑等。

4. 例句：

1) 三氧化鉬是一種重要的催化劑，在石油加工過程中起著關鍵作用。

2) 這種新型涂料中添加了三氧化鉬，使其具有更好的耐腐蝕性能。

3) 通過加熱鉬精礦，可以得到高純度的三氧化鉬，用于制備高級陶瓷材料。

4) 電子器件中常用的金屬氧化物場效應管中，三氧化鉬是最常用的柵極材料之一。

5) 在合成氨生產中，三氧化鉬可以作為催化劑促進反應速率。

5. 組詞：

1) 鉬酸鹽

2) 鉬酸銨

3) 催化劑

4) 石油加工

5) 陶瓷材料

6. Molybdenum trioxide, also known as molybdenum oxide or MO3, is an inorganic compound with the chemical formula MoO3 and a molecular weight of 143.94. It is a white or yellow solid with a strong odor and can be found in nature as a mineral or prepared by heating molybdenite.

Molybdenum trioxide has high stability and corrosion resistance, and it is not easily volatilized even at high temperatures. It also has good optical properties and can be used as a pigment and coloring agent. In addition, it has excellent electrical properties and is widely used in electronic devices.

The main use of molybdenum trioxide is for the preparation of other molybdenum compounds such as molybdates and ammonium molybdate. It is also used as a catalyst in various industrial processes such as petroleum refining, ammonia synthesis, and sulfuric acid production. Moreover, it can also be used in the production of ceramics, coatings, and preservatives.

In conclusion, molybdenum trioxide is a versatile compound with various applications in different industries. Its stable nature and excellent properties make it an essential ingredient in many processes and products. From petroleum refining to electronic devices, molybdenum trioxide plays a crucial role in our daily lives.