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sveta [45]
2 years ago
14

Which statements about a sodium atom (22/11 Na ), are correct?

Chemistry
1 answer:
inysia [295]2 years ago
3 0

Answer:D


Explanation:
Number of electrons=Number of protons
Sodium atom has 1 valence electron
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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.

Average value of measurements = ?

Formula:

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

Solution:

Average of measurements =  20.9 cm + 21.0 cm + 21.0 cm. / 3

Average of measurements = 62.9 cm / 3

Average of measurements = 20.97 cm

7 0
3 years ago
What is required in order to determine wether or not an object moves
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Answer:

The answer would be Point of Reference.

In order to determine, whether an object has moved or not, a point of reference is required. The reference point is required to the measure the movement of the object, without a reference point the distance or displacement cannot be obtained. Hence, a reference point is very required to determine, whether the object has moved or not.

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3 years ago
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Answer:

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Explanation:

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2 years ago
What is freshly pumped oil called?
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