3 years ago

Are elements considered to be substances?

1 answer:

7 0

Answer:

C. Yes, because they have a definite composition.

Explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>

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alisha [4.7K]

Answer:

$E=9.62\times 10^{-21}\ J$

Explanation:

Given that,

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We need to find the energy produced by this no of photons. It can be given by the formula as follows :

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