Problem: How many molecules of nitrogen monoxide are in a 22.5 gram sample?

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We are asked to find the number of molecules of nitrogen monoxide (NO) that are in a 22.5-gram sample.


1. Compute for the number of moles NO:

To find the number of molecules of nitrogen monoxide (NO) that are in a 22.5-gram sample, recall the formula for Molar mass;

Molar mass NO = mass of NOmoles NO 

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Problem Details

How many molecules of nitrogen monoxide are in a 22.5 gram sample?

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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 Mole Concept concept. You can view video lessons to learn Mole Concept. Or if you need more Mole Concept practice, you can also practice Mole Concept practice problems.

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