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Alexxx [7]
2 years ago
15

Electrons are the most important electrons to an atom. a) outer b) inner

Chemistry
1 answer:
Gnom [1K]2 years ago
6 0
The answer is A.Outer. Hope this helps
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How many moles are in 297g of nh3?<br><br> Please show work, will give brainliest.
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Answer:

17.5moles

Explanation:

The number of moles in a substance can be calculated by using the formula;

Number of moles (n) = mass (m) ÷ molar mass (MM)

According to this question, mass of ammonia (NH3) = 297g

Molar Mass of NH3 = 14 + 1(3)

= 17g/mol

n = 297/17

n = 17.47

Number of moles of NH3 = 17.5moles

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