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Nadya [2.5K]
2 years ago
8

Find the density of a cube volume of 150 cm and a mass of 100g

Chemistry
1 answer:
irakobra [83]2 years ago
3 0

Explanation:

density(d)=?

volume(v)=150cm=1.5m^3

mass(m)=100g=0.1kg

now,

d=m÷v

d=0.1÷1.5

d=0.0667kg/m^3

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\displaystyle \begin{aligned} \frac{(0.5\text{ mol/s})}{r_2} & = \sqrt{\frac{(2.02\text{ g/mol})}{(32.00\text{ g/mol})}} \\ \\  r_2 & = \frac{0.5\text{ mol/s}}{\sqrt{\dfrac{(2.02\text{ g/mol})}{(32.00\text{ g/mol})}}} \\ \\ & = 2.0\text{ mol/s}\end{aligned}

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In conclusion, it will take about 2.5 seconds for the hydrogen gas to effuse.

Check: Because hydrogen gas is lighter than oxygen gas, we expect that hydrogen gas will effuse quicker than oxygen gas.

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