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4 years ago

Please help! What is the molarity of 450 mL of solution containing 15 g NaCl?

Chemistry

1 answer:

siniylev [52]4 years ago

7 0

Answer:

The answer to your question is 0.6 M

Explanation:

Data

Molarity = ?

Volume = 450 ml

mass of NaCl = 15 g

Process

1.- Calculate the molar mass of NaCl

NaCl = 23 + 35.5 = 58.5 g

2.- Calculate the number of moles of NaCl

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

15 g of NaCl ------------ x

x = (15 x 1)/58.5

x = 0.26 moles

3.- Calculate the molarity

Molarity = moles/volume

-Substitutiion

Molarity = 0.26/0.45l

-Result

Molarity = 0.6 M

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