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VLD [36.1K]
2 years ago
14

How many electrons are gained in the half-reaction O2 + electrons — 202?

Chemistry
2 answers:
Likurg_2 [28]2 years ago
8 0

Answer: B. 4

Explanation:I just took it

zmey [24]2 years ago
5 0

Answer:c

Explanation:

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Ar (g) is placed in a 3.80 L container at 320 K. The gas pressure is 0.496 atm.
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Answer:

PV=nRt

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=>(0.49×3.80)/(0.08206×320)

Therefore Number of moles is = 0.071mols

Explanation: By using the Real gas equation..

PV=NRT .

We can solve for the number of moles of Ar by making N the subject..

Always make sure you pressure is In atm, your Volume is in Litres and temperature in degree Kelvin.

Also Recall the universal gas constant R used in this type of questions which is 0.08206.

Hence l, by making N the subject we get our answer as

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