3 years ago

What is the mass of 3.8 × 1024 atoms of argon (Ar)?Explain how you do it please.

1 answer:

6 0

I did this by calculating 3.8 times 1.24 and i got 389 1.2.

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alina1380 [7]

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dalvyx [7]

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5.8 moles of copper are needed to react with sulfur to produce 2.9 moles of copper (I) sulfide.

Explanation:

$2Cu+S\rightarrow Cu_2S$

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According to reaction, 1 mole of copper(I) sulfide is obtained from 2 moles of copper, then 2.9 moles of copper(I) sulfide will be obtained from :

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3 years ago