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katrin2010 [14]
3 years ago
9

I need help with these two questions

Chemistry
1 answer:
Mila [183]3 years ago
6 0

halogens have 7

allali have 2

noble gases have 8

K = 1

P = -3

Ra= 7

Cl = -1

N = 5

O = 6

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What is the S.I unit of pressure?
Vesna [10]

Answer:

pascal(pa)

Explanation:

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5 0
3 years ago
015
kozerog [31]

Answer:

Average of measurements = 20.97 cm

Explanation:

Given data:

Three measurements of pete's = 20.9 cm, 21.0 cm, 21.0 cm.

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Average of measurements = sum of all measurements / Total number of measurements

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7 0
3 years ago
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tester [92]
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-T.B.
3 0
3 years ago
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