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mote1985 [20]
3 years ago
6

How many moles are in 2.8x10^23 atoms of Calcium?

Chemistry
1 answer:
alina1380 [7]3 years ago
5 0

Answer:

b. 0.47 moles Ca.

Explanation:

Hello there!

In this case, since 1 mole of any element contains 6.022x10²³ atoms of the same, it is possible for us to compute the moles in 2.8x10²³ atoms of calcium via the Avogadro's number:

2.8x10^{23}atomsCa*\frac{1molCa}{6.022x10^{23}atomsCa}\\\\=0.47molCa

Therefore, the answer would be b. 0.47 moles Ca.

Best regards!

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