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navik [9.2K]
3 years ago
14

What branch of science is concerned with the interaction between matter and electromagnetic radiation?

Chemistry
1 answer:
svp [43]3 years ago
5 0
It’s number 3..................
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Write a balanced chemical equation that shows the formation of 3-methylbutanoic acid from the elements carbon (C), hydrogen (H2
Arturiano [62]

Answer:

5C+2H_2+O_2\rightarrow C_5H_1_0O_2

Explanation:

Hello there!

In this case, according to the given information, and considering that the molecular formula of 3-methylbutanoic acid is:

C_5H_1_0O_2

Thus, the formation reaction is:

C+H_2+O_2\rightarrow C_5H_1_0O_2

However, it must be balanced because of the unequal number of carbon and hydrogen atoms yet those of oxygen seem to be balanced:

5C+2H_2+O_2\rightarrow C_5H_1_0O_2

Regards!

4 0
3 years ago
Hydrazine, N2H4, is a colorless, oily liquid that fumes in air and has an odor much like that of ammonia. It is used as a rocket
Cloud [144]

Answer:

1 unshared pair of electrons

Explanation:

In order to draw the Lewis structure, we need to consider the octet rule: atoms tend to share electrons to complete their valence shell with 8 electrons. In the case of H, it has to complete a duet (2 valence electrons).

N has 5 valence electrons, so it has to share 3 pairs of electrons to reach the octet.

H has 1 valence electron, so it has to share 1 pair of electrons to reach the duet.

In the picture, we can see the resulting Lewis structure. There is 1 unshared pair of electrons on each nitrogen.

6 0
3 years ago
WILL GIVE POINTS AND BRAINLIEST<br> Question:<br> Number of H− ions in 5.22 g of SrH2
Sophie [7]

Answer:

moles H = 2 x 0.0649=0.130

ions = 0.130 x 6.02 x 10^23=7.81 x 10^22

Explanation:

4 0
3 years ago
1.
Vlad1618 [11]

Answer:

i think it would be A

Explanation:

5 0
3 years ago
The summary or ending of your experiment​
Katyanochek1 [597]

Answer:

Conclusion

Explanation:

I believe you were asking for the term that best matches with the description given. Typically the conclusion summarizes your experiment in a 1 to 2 paragraph format.

7 0
4 years ago
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