Question

how many mole are in 5 gram of calcium ​

Answer 1

Answer:

Here is your answer

Explanation:

m = 5g

n = m/M

=5/40

= 0.12 mole.

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Answer 2

The molar mass of Calcium is 40 grams per mole.

So, 1 mole of Calcium has a mass of 40 grams.

So, 5 grams of Calcium is 5/40 => 1/8 moles => 0.125 moles.

Hence, 5 grams of Calcium has 0.125 moles of Calcium metal in it.