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LuckyWell [14K]
3 years ago
8

Can someone please help??????????? pleaseeee

Chemistry
1 answer:
Zepler [3.9K]3 years ago
7 0

Answer:

Explanation:

a) calcium chloride

b) magnesiom oxide

c) Aluminium nitride

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The mass of a jar of sugar is 11. 9 kg. What is the total mass of 13 jars of sugar?.
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154.7

Explanation:

11.9kg x 13 = 154.7

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2 years ago
Which tool was most likely used in a procedure if the lab report shows that approximately 300 mL of water was used?
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A beaker

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3 years ago
Can isotopes have different atomic numbers
Tpy6a [65]

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No

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3 years ago
λmax for the π → π* transition in ethylene is 170 nm. Is the HOMO-LUMO energy difference in ethylene greater than or less than t
-Dominant- [34]

Answer:

the HOMO-LUMO energy difference in ethylene is greater than that of cis,trans−1,3−cyclooctadiene

Explanation:

The λmax is the wavelength of maximum absorption. We could use it to calculate the HOMO-LUMO energy difference as follows:

For ethylene

E= hc/λ= 6.63×10^-34×3×10^8/170×10^-9= 1.17×10^-18J

For cis,trans−1,3−cyclooctadiene

E= hc/λ=6.63×10^-34×3×10^8/230×10^-9=8.6×10^-19J

Therefore, the HOMO-LUMO energy difference in ethylene is greater than that of cis,trans−1,3−cyclooctadiene

8 0
3 years ago
I know that one of them is multiple choice but i’m not sure which one it is.
Evgen [1.6K]

Explanation:

1. neutrons

2. protons

3. protons and neutrons

4. neutrons

5. electrons

I'm not sure with 1 and 4, sorry :<

5 0
2 years ago
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