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AnnZ [28]
3 years ago
14

What is the lowest temperature that a substance can reach?

Chemistry
1 answer:
kobusy [5.1K]3 years ago
3 0
Absolute zero that means cooling - 0 degree
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2 years ago
The Lyman series results from excited state hydrogen atoms transiting to
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Answer:

I can't draw diagrams on this web site but I can do with numbers I think. So an electron is moved from n = 1 to n = 5. I'm assuming I've interpreted the problem correctly; if not you will need to make a correction. I'm assuming that you know the electron in the n = 1 state is the ground state so the 4th exited state moves it to the n = 5 level.

n = 5 4th excited state

n = 4 3rd excited state

n = 3 2nd excited state

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Here are the possible spectral lines.

n = 5 to 4, n = 5 to 3, n = 5 to 2, n = 5 to 1 or 4 lines.

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b. The Lyman series is from whatever to n = 1. Count the above that end in n = 1.

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To find the E for any transition (delta E) take E for upper n and subtract from the E for the lower n and that gives you delta E for the transition.

So for n = 5 to n = 1, use -Efor 5 -(-Efor 1) = + something which I'll leave for you. You could convert that to wavelength in meters with delta E = hc/wavelength. You might want to try it for the Balmer series (n ending in n = 2). I think the red line is about 650 nm.

Explanation:

8 0
2 years ago
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Answer:

water

Explanation:

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3 years ago
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Chemical change changes the chemical composition and undergoes a process in which it results as a new substance.

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