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mestny [16]
3 years ago
8

Chem help what's the answer to 8 and why will give brainliest​

Chemistry
2 answers:
arsen [322]3 years ago
7 0

Is this the same question that I have solved yesterday?

"

The Ideal Gas Law states that PV=nRT where P is pressure, V is volume, n is number of molecules, R is the gas constant and T is the temp.

As temp does not change and pressure does not change, we move the constants to one side: V/n=RT/P=constant.

We get V1/n1=V2/n2

n1=352 milimoles

n2=352+100=452 millimoles

V2=n2*V1/n1=452*25.2/352

=32.36mL

"

If so, you can report this question. A moderator will delete it and you can get your points back.

laiz [17]3 years ago
4 0

avogadros law states that under constant temp n pressure, volume of a gas is directly proportional to amount of gas

amount of gas1 = 352millimoles

amount of gas2 = 352+100 = 452millimoles

new vol = old vol x 452/352 = 25.2 x 452/352

= 32.4 mL

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M = n/v          (M: Molarity) (n: moles of solute) (v: Liters of solute)

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Now, you have to convert grams to moles in order to solve for molarity (M).

1.) On the periodic table find the molecular weights of H and O.

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10.0 g/ 34.02 g = <em>0.2939 mol</em>

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