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ozzi
3 years ago
12

What is the volume (in liters) of a 5.98 gram sample of O2 at STP?

Chemistry
1 answer:
borishaifa [10]3 years ago
4 0

Answer:

4.186 L

Explanation:

Using the pv=nrt equation and converting the grams of O2 into mols. After finding the number of mols by dividing 5.98 by 32 (2*the atomic weight of O) you plug that into the equation. So then you have 1*V=.186875*.08206*273 then you rearrange the equation to solve for v and get 4.186 L

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According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

Given mass of melatonin = 0.01 g

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\text{Number of moles of melatonin}=\frac{0.01 g}{232.28g/mol}=0.000043mol

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3 years ago
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