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Elena L [17]
4 years ago
8

Please help me will reward Brainly

Chemistry
2 answers:
Damm [24]4 years ago
5 0
Is it carbon dioxide
zhannawk [14.2K]4 years ago
5 0
The answer is Carbon Dioxide (Co2).
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How many molecules are in 3.5 moles of H2O A. 2.107x10^24 B. 3.87x10^24 C. 21.07 B. 1.72x10^23
Pani-rosa [81]

Answer:

A. 2.107x10^24

Explanation:

1 mole is defined as the particles containing in 12g of 12-C. That is 6.022x10²³ particles.

When you say 1 mole of atoms means 6.022x10²³ atoms, 1 mole of molecules means 6.022x10²³ molecules, etc.

Now, 3.5 moles of H₂O are:

3.5mol * (6.022x10²³ molecules / 1mol) = 2.107x10²⁴ molecules of H₂O.

Thus, right answer is:

<h3>A. 2.107x10^24</h3>
8 0
3 years ago
Balanced equation of sulphur dioxide ​
evablogger [386]

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Here you go :)

Have a wonderful day :D

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Explanation:

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Yes hydrogen is a non metal 
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