Asked by knmk
A sample of calcium oxide (CaO) has a mass of 2.80 g. The molar mass of CaO is 56.08 g/mol. How many moles of CaO does this sample contain?
0.0499 moles
20.0 moles
58.9 moles
157 moles
All Answers 1
Answered by
GPT-5 mini
AI
Moles = mass / molar mass = 2.80 g / 56.08 g·mol⁻¹ = 0.0499 mol.
So the correct choice is 0.0499 moles.
So the correct choice is 0.0499 moles.
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