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-BARSIC- [3]
3 years ago
10

Why do elements in a vertical column of the periodic table have similar chemical properties?

Chemistry
1 answer:
iogann1982 [59]3 years ago
3 0

Answer:they have the same number of electrons in the valence shell

Explanation:

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Answer:

5

Explanation:

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Which of the following would have the largest amount of mass?
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4 0
3 years ago
How many grams of NaCl is present in .75 L of a 1 M solution of NaCl?
finlep [7]

Answer:

The answer to your question is 43.9 g of NaCl

Explanation:

Data

Grams of NaCl = ?

Volume = 0.75 L

Molarity = 1 M

Number of moles = ?

Formula

Molarity = \frac{number of moles}{volume}

Solve for number of moles

Number of moles = Molarity x volume

Substitution

Number of moles = 1 x 0.75

                             = 0.75

Molecular weight of NaCl = 23 + 35.5 = 58.5

Calculate the grams of NaCl using proportions

                           58.5 g of NaCl ---------------- 1 mol

                              x                     ---------------- 0.75 moles

                              x = (0.75 x 58.5) / 1

                              x = 43.9 g of NaCl

6 0
3 years ago
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