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SOVA2 [1]
2 years ago
10

Which element gains two electrons to fill its outermost energy level?

Chemistry
1 answer:
laiz [17]2 years ago
4 0
O magnesium Mg is the answer
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Dissolving salt in water reduces the intermolecular forces between water molecules. What most likely happens to the surface tens
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If we dissolve salt in water they will reduce the intermolecular forces between water molecule and this will decrease the surface tension.

Surface tension is due to cohesive forces (the forces between molecules of same substance) hence as cohesive forces decreases the surface tension also decreases

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What is the mass of sodium (Na) in 50 grams of table salt (NaCl)? Show your work.
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Answer:

19 g

Explanation:

Data Given:

Sodium Chloride (table salt) = 50 g

Amount of sodium (Na) = ?

Solution:

Molecular weight calculation:

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calculate the mole percent composition of sodium (Na) in sodium Chloride.

Since the percentage of compound is 100

So,

Percent of sodium (Na) = 23 / 58.5 x 100

Percent of sodium (Na) = 39.3 %

It means that for ever gram of sodium chloride there is 0.393 g of Na is present.

So,

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mass of sodium (Na) = 19 g

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