Problem: How many moles of Kr are contained in 398 mg of Kr?

FREE Expert Solution

We are asked to determine how many moles are contained in 398 mg of Krypton Kr.


To find how many moles are contained in 398 mg Kr, recall the formula for Molar Mass

Molar mass = mass elementmole element

 Where the Molar mass Krypton = 83.8 grams/mole

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How many moles of Kr are contained in 398 mg of Kr?

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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.