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saw5 [17]
3 years ago
15

At a molecular level describe the differences between a hot object and a cold object​

Chemistry
1 answer:
Inessa [10]3 years ago
5 0

Answer:

.

Explanation:

The hot object are those which have high energy atoms that moves with a very fast energy whereas the cold object are those which have low energy atoms and moves with low speed.

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3 0
3 years ago
If the half-life of a radioactive substances is 590 million years and you have 40 atoms of it, how many half-lives will have pas
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Answer:

3

Explanation:

Applying,

2^{n'} = R/R'............... Equation 1

Where n' = number of halflives that have passed, R = Original atom of the substance, R' = atom of the substance left after decay.

From the question,

Given: R = 40 atoms, R' = 5 atoms

Substitute these values into equation 1

2^{n'} = 40/5

2^{n'} = 8

2^{n'} = 2³

Equation the base,

n' = 3

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