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qwelly [4]
2 years ago
6

8.

Chemistry
2 answers:
devlian [24]2 years ago
8 0
The answer is A because I did this before
Svet_ta [14]2 years ago
7 0
A doing it rn hope I’m right
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Suppose you need to prepare 136.9 mL of a 0.315 M aqueous solution of NaCl.
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Answer:

2.52 g NaCl

Explanation:

(Step 1)

To find the mass, you first need to find the moles NaCl. This value can be found using the molarity ratio:

Molarity = moles / volume (L)

After you convert mL to L, you can plug the given values into the equation and simplify to find moles.

136.9 mL / 1,000 = 0.1369 L

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Now, you can use the molar mass to convert moles to grams.

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Molar Mass (NaCl): 58.443 g/mol

0.0431 moles NaCl           58.443 g
------------------------------  x  -------------------  =  2.52 g NaCl
                                            1 mole

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2 years ago
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