How many moles are in 15.0 grams of calcium (Ca)?
2 answers:
1 mol ---- 40g
X --------- 15g
X = 15/40 = 0,375 moles
:)
Answer:
The correct answer is option A.) 0.374 moles
Explanation:
Hello!
Let's solve this!
Calcium (Ca) has a mass of 40g / mol
In this case we have 15 g of Ca.
We need to calculate the amount of moles so the operation to be performed is as follows:
mol Ca = 15g * (1mol / 40g) = 0.375 mol
We conclude, after the calculations, that the correct answer is option A.) 0.374 moles
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