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frozen [14]
4 years ago
8

Electrons orbit around the nucleus in these

Chemistry
1 answer:
daser333 [38]4 years ago
5 0
Electrons orbit in orbitals (s, p, d, f).
Technically, the number of orbitals extend to infinity, but the effective nuclear charge decreases as the distance increases.
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According to the fossil record found in these sedimentary layers, what conclusion can be drawn about the movement of life to lan
Andrei [34K]

<em>A conclusion that can be drawn about the movement of life to land is that;</em>

B.) As land plants became more complex, animal life did as well.

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3 years ago
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Given the reaction represented by the balanced equation:
user100 [1]

Answer:

mass of CHF_3 = 1/3 \times 9.47 \times 70 =220.97g

Explanation:

CH_4(g)+3F_2(g)->3HF(g)+CHF_3

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so 1 mole will give \frac{1}{3} mole of CHF_3

therefore,

9.47 mole of F_2 will give \frac{1}{3}  \times 9.47 mole of CHF_3

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7 0
3 years ago
QUESTION 4
Greeley [361]

Answer:

B) 2

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There are two significant figures in given measurement,

2, 0

Significant figures:

1= The given measurement have four significant figures 1534.

2= All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

3= Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.

4= Zero between the non zero digits are consider significant like 107 consist of three significant figures.

5= The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.

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4 years ago
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pochemuha

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Just know basic polar and non-polar knowledge.

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{ \bf{Cu {}^{2 + } + 2e \:  → \: Cu }}

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3 years ago
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