Question

A chemist needs 0.550 mol selenium for a reaction. What mass of selenium should a chemist use?
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Answer 1

Answer:

The chemist would require to use 43.43 grams.

Explanation:

In order to solve this problem we need to know how much do 0.550 moles of selenium weigh. To do that we use selenium's molar mass and multiply it by the given number of moles:

• 0.550 mol * 78.96 g/mol = 43.43 g

The chemist would require to use 43.43 grams.