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kirill [66]
2 years ago
5

How can scientists determine when a radioactive substance will no longer be dangerous

Chemistry
1 answer:
LekaFEV [45]2 years ago
7 0
They can probably use those radioactive measuring things. But they will still use proper caution around it.
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Which of the following best explains what happens when the kinetic energy of particles in a liquid state increases?
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ITS THAT :)

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Has any one done 2020 chemistry paper 1 aqa gcse
Mars2501 [29]

Answer:

what do you mean?

Explanation:

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3 years ago
An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its
german
Hello!

First you need to calculate q 
<span>delta U is change in internal energy </span>

<span>delta U = q + w </span>
<span>q is heat and w work done </span>
<span>here work was done by the system means energy leaving the system so w is negative </span>

<span>delta U = q + w </span>

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<span>q = m x c x delta T </span>

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<span>c = 0.451 J /g °C
</span>
Hope this Helps! Have A Wonderful Day! :)
5 0
3 years ago
List earth and the gas giant planets from the hottest to the coldest planet
inessss [21]

Answer:

1. Venus

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2. Mercury

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4. Mars

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5. Jupiter

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6. Saturn

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7. Uranus

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8. Neptune

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Explanation:

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