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Likurg_2 [28]
2 years ago
8

State, in terms of electrons, why the radius of Na+ ion in the table salt is smaller than the radius of a Na atom.

Chemistry
1 answer:
Anastaziya [24]2 years ago
3 0

Answer:

• The Na atom is formed when the Na+ ion gains an electron.

• A Na+ ion has 10 electrons and a Na atom has 11 electrons.

• A sodium atom has one more electron shell than a sodium ion.

• A Na+ ion is formed when a Na atom loses an electron

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What is the molarity of a solution containing 8.0 moles of solute in 120mL of solution?
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Answer:
200/3 M which is approximately equal to 66.6667 M

Explanation:
Molarity is defined as the number of moles of solute per liter of solution.

It can be calculated as follows:
molarity =  \frac{number of moles of solute}{liters of solution}

We are given that:
number of moles of solute = 8 moles
volume of solution = 120 ml = 0.12 liters

Substitute with the givens in the above equation to get the molarity as follows:
molarity = \frac{8}{0.12} =  \frac{200}{3} = 66.6667 M

Hope this helps :)
3 0
3 years ago
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so mass of sodium = 1 × 23= 23 g

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