# Problem: a. What is the mass of one helium atom?b. What is the mass of 1.5 moles of helium atoms?

###### FREE Expert Solution

For Part a. We're being asked to determine the mass of one helium atom. The flow of our calculation will be like this:

Atoms He (Avogadro’s number) → Moles of He (molar mass of He) → Mass of He

• molar mass of He (from the periodic table) = 4.003 g/mol
• Avogadro’s Number: Avogadro’s number gives us the number of entities present in 1 mole: 6.022 × 1023 He atoms in 1 mole of He

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###### Problem Details

a. What is the mass of one helium atom?

b. What is the mass of 1.5 moles of helium atoms?

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.

What professor is this problem relevant for?

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