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vovikov84 [41]
3 years ago
7

I need helpppp will pay anything !!

Chemistry
1 answer:
nydimaria [60]3 years ago
7 0

Answer: iss as kfnandn

Explanation:

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tatuchka [14]
The answer would be .5 mols because you take the total amount of grams, which is 20, and you had up the molar mass of sodium hydroxide, which would be 40. After you have this you would set this up as a stochiometry equation. With 1 mol on top you dived 20/40 to cancel out your grams. This leaves you with .5 mols

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_Mg+_O2=_MgO<br> Balance out this reaction above
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Which answer is INCORRECT not the correct one ​
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It's 4

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1. Imagine you have a sealed 20.0 L balloon filled with helium gas at 750 mmHg in the
SVETLANKA909090 [29]

Answer:

17.6510 L

Explanation:

First we should get the number of moles of helium here by Boyle's law

PV=nRT

P=750/760= 0.9868 atm

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R= 0.08206

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so

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Then use the same law

V=0.80707×0.08206×263/0.9869=

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SO THE VOLUME WILL BE 17.6510 L

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2 years ago
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