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netineya [11]
4 years ago
11

Which of the following is true about the frequencies of electromagnetic radiation

Chemistry
1 answer:
Semmy [17]4 years ago
3 0
<h2>Answer:Ultraviolet waves have higher frequencies than radio waves.</h2>

Explanation:

The waves arranged in increasing order of frequency are radio waves,infrared waves,x-rays,ultraviolet waves.

Option A:

Ultraviolet waves have higher frequencies than radio waves.This agrees with the above order.

Option B:

X-rays have lower frequencies than infrared waves.This does not agree with the above order.

Option C:

Radio waves have higher frequency than x-rays.This does not agree with the above order.

Option D:

Gamma rays have lower frequencies than ultraviolet waves.This does not agree with the above order.

So,option A is correct.

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harkovskaia [24]

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1.41 *10^{3}  kJ/mol

Explanation:

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Then we solve the ecuation for ΔH°reaction

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Now, the further answer depends on what particles the question concentrates on.

If number of atoms are asked , the above answer must be multiplied by 2, because oxygen is a diatomic gas and each atom contributes to be a particle.

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