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Finger [1]
2 years ago
9

Please Help Quick!!! Lewis Structure of PO3 3-

Chemistry
1 answer:
nevsk [136]2 years ago
8 0

1. Find its coordination figure/coordination number of central atom (CF)

Ev = Vallence electron of central atom

Σe = electrons donated from substituents

Terminal O gives 0 electrons, hence Σe = 3 x 0

charge = charge of the compound

2. Find EP (electron pairs) and LP (lone pairs)

LP = CF - EP

3. Draw the skeleton with octet substituents (top right figure)

4. Find formal charge for each atoms (Qf)

5. Write formal charge near atom in skeleton

6. Enjoy

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Answer:

Explanation:

Q1.

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Q2.

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Q3.

(a) x-axis labelled and suitable scale

Page 12 of 13

points plotted correctly

allow 5 correctly plotted for 2 marks, 3−4

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allow ± ½ square

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allow ecf from line of best fit in part (a)

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ΔE = 1.50 × 900 × 11.5

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an answer of 15.525 (kJ) or 15.53 (kJ) or 15.5

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[10]

Q4.

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an answer of 136 000 (J) scores 3 marks

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allow any sensible practical suggestion

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(d) efficiency = 300/500

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7 0
2 years ago
What is the purpose of doing a cell culture lab?
Anuta_ua [19.1K]

Answer:

Cell culture is one of the most important techniques in cellular and molecular biology since it provides a platform to investigate the biology, biochemistry, physiology (e.g., aging) and metabolism of wild-type cells and diseased cells.

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2 years ago
Answer asap with at least 3 or more sentences!
mixas84 [53]

Answer:

no.

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The reason this has

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6 0
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asambeis [7]
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3 years ago
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Fynjy0 [20]

Answer:

The answer to your question is:

Explanation:

Quantum numbers have the numbers

n = from 1 to 7

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m = ± l

s = ±1/2

Group of answer choice.

A) 2, -1. 1, -1/2     The option is incorrect "l" could not be negative

B) 2, 1, 0 , 1/2       The option is posible

C) 3, 2, 1, -1          This option is incorrect "s" can not value -1

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H) 3, 0, 0, 1/2       This option is incorrect "l" can not value 0

I) 0, 2, 0, 1/2         This option is incorrect, n can not value 0

J) 3, 2, 2, 1/2        This option is correct

K) 1, 2, 0, -1/2       This option is incorrect "l" can not value 2.

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3 years ago
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