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VARVARA [1.3K]
3 years ago
14

Please help I need to pass this or I fail how many grams of Mg are in 7.43x10^22 atoms of Mg

Chemistry
2 answers:
Svetllana [295]3 years ago
5 0
I believe your answer is 3g of Mg.
Kipish [7]3 years ago
5 0
The answer is 2.99 which you can round up to 3.
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Nitrogen and water react to form nitrogen monoxide and hydrogen, like this: N2(g) + 2H2O(g) → 2NO(g) +2H2(g) Also, a chemist fin
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Answer:

Kc for this reaction is 0.43

Explanation:

This is the equilibrium:

N₂(g) + 2H₂O(g) → 2NO(g) +2H₂(g)

And we have all the concentration at equilibrium:

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They are ok, because they are in MOLARITY. (mol/L)

Let's make the expression for Kc

Kc = ( [NO]² . [H₂]² ) / ([N₂] . [H₂O]²)

Kc = (0.33² . 1.2²) / (0.25 . 1.2²)

Kc = 0.4356

In two significant digits. 0.43

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