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masya89 [10]
3 years ago
13

A covalent bond is formed by the sharing of _______ between atoms, whereas an ionic bond is formed by the _______.

Chemistry
1 answer:
OleMash [197]3 years ago
7 0
Electrons and electrons
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What is the mass of 2.50 moles of NaCl
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Answer:

The mass of 2,50 moles of NaCl is 146, 25 g.

Explanation:

First we calculate the mass of 1 mol of NaCl, starting from the atomic weights of Na and Cl obtained from the periodic table. Then we calculate the mass of 2.50 moles of compound, making a simple rule of three:

Weight NaCl= Weight Na + Weight Cl=  23 g+ 35,5 g= 58, 5 g/ mol

1 mol ------ 58, 5 g

2,5 mol---x= (2,5 mol x 58, 5 g)/ 1 mol = <u>146, 25 g</u>

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