Law of Definite Proportions Video Lessons

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Problem: What is the chemical formula for quartz?Express your answer as a chemical formula.Matter is made up atoms, but in a real chemistry lab, we measure substances in grams. Therefore you need to be able to convert from grams to numbers of atoms, and vice versa.Quartz, which contains one silicon atom and two oxygen atoms per formula unit, is the second-most-common mineral on Earth after feldspar. It is used as a gemstone, as well as in pressure gauges, oscillators, resonators, wave stabilizers, heat-ray lamps, and prismastic lenses, and in the manufacture of glass, paints, abrasives, and precision instruments such as watches.

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What is the chemical formula for quartz?
Express your answer as a chemical formula.


Matter is made up atoms, but in a real chemistry lab, we measure substances in grams. Therefore you need to be able to convert from grams to numbers of atoms, and vice versa.

Quartz, which contains one silicon atom and two oxygen atoms per formula unit, is the second-most-common mineral on Earth after feldspar. It is used as a gemstone, as well as in pressure gauges, oscillators, resonators, wave stabilizers, heat-ray lamps, and prismastic lenses, and in the manufacture of glass, paints, abrasives, and precision instruments such as watches.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Law of Definite Proportions concept. You can view video lessons to learn Law of Definite Proportions. Or if you need more Law of Definite Proportions practice, you can also practice Law of Definite Proportions practice problems.

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Based on our data, we think this problem is relevant for Professor Albright's class at UMICH.