Why do you need to convert mass to moles in stoichiometry problems?

Why do you have to convert mass to moles?

Answer: Big, because atoms and molecules are way too small to count, so we mass large numbers of them instead, and use molar mass to convert to the NUMBER of moles of them.

Why is the mole so important in stoichiometric conversions?

Why is the mole unit so important? It represents the link between the microscopic and the macroscopic, especially in terms of mass. A mole of a substance has the same mass in grams as one unit (atom or molecules) has in atomic mass units.

Why are moles and molar mass necessary for stoichiometry?

That is an extremely common question when first using stoichiometry. The answer is that you are converting based on number, not on mass. … Big, because atoms and molecules are way too small to count, so we mass large numbers of them instead, and use molar mass to convert to the NUMBER of moles of them.

What is stoichiometry and why is it important?

Given a chemical reaction, stoichiometry tells us what quantity of each reactant we need in order to get enough of our desired product. Because of its real-life applications in chemical engineering as well as research, stoichiometry is one of the most important and fundamental topics in chemistry.

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Why is molar mass important in stoichiometric calculations?

Molar mass is of great importance when setting up an experiment. If you are testing principles involving specific amounts of a substance, the molar mass allows you to figure out how much you should weigh out on your scale. As an example, consider an experiment calling for 2 moles of pure carbon.

Why do we use moles instead of individual atoms?

The mole is important because it allows chemists to work with the subatomic world with macro world units and amounts. Atoms, molecules and formula units are very small and very difficult to work with usually. However, the mole allows a chemist to work with amounts large enough to use.