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3 years ago

Which statement about the waste materials from nuclear power plants is true?

Chemistry

2 answers:

alina1380 [7]3 years ago

6 0

Answer: The correct answer is "The waste emits harmful radiation for a long time".

Explanation:

Nuclear fission: The nuclear energy is generated from the splitting of uranium atom. Here, Uranium is a radioactive material.

Nuclear reactor controls the release of energy.

The by product of the nuclear generation is the radioactive waste in the nuclear power plant. The radioactive material emits harmful radiation. Some industries throw their radioactive waste material in river. It would be harmful for marine life.

The radioactive material emits harmful radiation. If there is any leakage in the power plant. It could cause cancer, skin burn and birth defect to the employees who are working in the nuclear power plant.

Therefore, the true statement is "The waste emits harmful radiation for a long time".

lora16 [44]3 years ago

3 0

The waste emits harmful radiation for a long time.

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Explanation:

Recall the law of effusion:

$\displaystyle \frac{r_1}{r_2} = \sqrt{ \frac{\mathcal{M}_2}{\mathcal{M}_1} }$

Because 5 mol of oxygen was effused in 10 seconds, the rate is 0.5 mol/s.

Let the rate of oxygen be r₁ and the rate of hydrogen be r₂.

The molecular weight of oxygen gas is 32.00 g/mol and the molecular weight of hydrogen gas is 2.02 g/mol.

Substitute and solve for r₂:

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

Because there are 5 moles of hydrogen gas:

$\displaystyle 5.0\text{ mol} \cdot \frac{1\text{ s}}{2.0\text{ mol}} = 2.5\text{ s}$

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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