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3 years ago

10

FINALS IN 3 WEEKS! I now have an F in chemistry, a 65.4, I need a 69.5 to pass, is it possible to raise that grade, my final is

worth 20% of my total grade, and I just took a test I think I got a D on.....PLEASE HELP

1 answer:

erastova [34]3 years ago

8 0

You just have to pass your final with a grade above 75

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Maslowich

Answer: 0.43molO₂

Explanation:

The ideal gas law for moles is $n=\frac{PV}{RT}$ . If you did not know, R is the ideal gas constant, $0.0821\frac{L*atm}{mol*K}$ .

Since the temperature must be in Kelvin, we must convert our given temperature from ℃ to K. $19C+273=292K$

Now that we have the temperature converted to Kelvin, we can plug in our information to the ideal gas law for the number of moles.

$n=\frac{PV}{RT}$

$n=\frac{1.38atm*7.51L}{0.0821\frac{L*atm}{mol*K} *292K} =0.43molO_{2}$

$n=0.43molO_{2}$

Therefore, the number of moles is 0.43molO₂.

I hope this helps! Pls mark brainliest!! :)

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2 years ago

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