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Gre4nikov [31]
3 years ago
10

Yo peeps! Important question: What does the colors blue, purple, green, and yellow mean on a mood ring??

Chemistry
1 answer:
Ksivusya [100]3 years ago
4 0

Blue usually means sadness, yellow is happiness, purple is calm, green is jealousy

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When NH3(g) reacts with O2(g) according to the following reaction, 226 kJ of energy are evolved for each mole of NH3(g) that rea
serious [3.7K]

Answer:

4NH₃ + 5O₂   →  4NO + 6H₂O    ΔH = -904 kj

Explanation:

Given data:

Energy evolved when one mole of NH₃ react = 226 kj

Energy evolved when 4 mole of NH₃ react =  ?

Solution:

Chemical equation:

4NH₃ + 5O₂   →  4NO + 6H₂O      

It is stated in question that when one mole of ammonia react 226 kj energy evolved.

When 4 moles react energy evolved is,

1 mol = -226 kj

4 mol × -226 kj / 1mol

-904 kj

when 4 moles of ammonia react 904 kj energy is evolved.

Complete thermal equation:

4NH₃ + 5O₂   →  4NO + 6H₂O    ΔH = -904 kj

6 0
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