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umka2103 [35]
3 years ago
11

Why do lithium (Li) and sodium (Na) have similar properties?

Chemistry
1 answer:
ella [17]3 years ago
8 0
B, they belong to group 1

A: Li is period 2 and Na is period 3

C: Na has one more electron shell

D: Not related to how it is spelled
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What is the average atomic mass of hafnium given the following abundance information on the isotopes?
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Answer:

178.55

Explanation:

176 × 0.05+ 177 × 0.19 + 178 × 0.27 + 179 × 0.14 + 180 × 0.35 = 178.55

7 0
3 years ago
A 2.75 M solution is diluted to 0.706 M, if the starting volume was 0.833L, what is the new volume?
Nitella [24]

Answer:

3.2447

Explanation:

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8 0
2 years ago
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tekilochka [14]

Answer:

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Explanation:

U dont have to copy and paste this put these are some ideas to use for ur answers

6 0
3 years ago
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</span>
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3 0
3 years ago
The electronegativity of nitrogen (n) is 3.0, while the electronegativity of hydrogen (h) is 2.1. knowing this, consider how the
Goryan [66]

The electronegativity of nitrogen (N) is 3.0, while the electronegativity of hydrogen (H) is 2.1. As it can be seen that nitrogen (N) is more electronegative than that of hydrogen (H),  

So electron pairs are attracted towards nitrogen and thus it carries a partial negative charge and hydrogen carries a partial positive charge. The image of electron distribution is attached as follows.

Thus NH₃ is a polar molecule .

8 0
4 years ago
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