4 years ago

Do all metal produce electromagnetic radiation when they are heated in a flame

Chemistry

1 answer:

Ilia_Sergeevich [38]4 years ago

3 0

Answer:

Yes , all metals when placed in the heat produces EM radiations

Explanation:

Due to heat , the electrons mobilized and collapsed and electronic transition happened . the electrons shift from low level to high level and so on in the opposite . The electromagnetic radiation are emitted

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Answer:

$\Delta S^{0}$ for the reaction is -198.762 J/K

Explanation:

$N_{2}(g)+3H_{2}(g)\rightarrow 2NH_{3}(g)$

Standard change in entropy for the system ( $\Delta S^{0}$ ) is given by-

$\Delta S^{0}=[2moles\times S^{0}(NH_{3})_{g}]-[1mole\times S^{0}(N_{2})_{g}]-[3\times S^{0}(H_{2})_{g}]$

where $S^{0}$ represents standard entropy.

Here $S^{0}(NH_{3})_{g}=192.45J/(K.mol)$ , $S^{0}(N_{2})_{g}=191.61J/(K.mol)$ and $S^{0}(H_{2})_{g}=130.684J/(K.mol)$

So, $\Delta S^{0}=[2\times 192.45]-[1\times 191.61]-[3\times 130.684]J/K=-198.762J/K$

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3 years ago

Which statements describe molecules? Check all that apply.

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Answer:

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