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Vladimir79 [104]
3 years ago
6

Which statement describes an advantage of renewable resources they are cheaper than traditional energy sources they are a source

of clean energy they are located everywhere around the world they are an affordable means of energy production that supposed to mean
Chemistry
2 answers:
patriot [66]3 years ago
7 0

Correct answer is B. They are a source of clean energy.

aleksley [76]3 years ago
5 0
The answer is that they are a source of clean energy. This is because the renewable resources do not produce environmentally hazardous emissions during the production of energy.
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Explanation:

According to the analysis, Molarity is amount mole per volume(1L). the amount in mole would be molarity × volume in litres.

0.500M × (250/1000)L= 0.125moles.

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3 years ago
Which contribution added to Rutherford's discovery of a positive nucleus?
irina [24]
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If the half-life of a radioisotope is 10,000 years, the amount remaining after 20,000 years is
Cloud [144]

Answer:

Considering the half-life of 10,000 years, after 20,000 years we will have a fourth of the remaining amount.

Explanation:

The half-time is the time a radioisotope takes to decay and lose half of its mass. Therefore, we can make the following scheme to know the amount remaining after a period of time:

Time_________________ Amount

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6 0
3 years ago
Radium-221 has a half-life of 30 sec. How long will it take for 96% of a sample to decay?
monitta
We can calculate how long the decay by using the half-life equation. It is expressed as:

A = Ao e^-kt

<span>where A is the amount left at t years, Ao is the initial concentration, and k is a constant.
</span><span>From the half-life data, we can calculate for k.
</span>
1/2(Ao) = Ao e^-k(30)
<span>k = 0.023
</span>
0.04Ao = Ao e^0.023(t)
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