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What is the molarity of a solution that contains 20 grams of salt dissolved in 3.0 L of solution? The molar mass of water is 18g/mol. 0.37 M 6 M 6.7 M 3.5 M
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What is the molarity of a solution that contains 20 grams of salt dissolved in 3.0 L of solution? The molar mass of water is 18g/mol. 0.37 M 6 M 6.7 M 3.5 M

User Akhil S
by
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2 Answers

3 votes

Answer:

The answer is 0.37 M :)

Step-by-step explanation:

User Vian
by
8.5k points
2 votes
Number of moles :

n = mass solute / molar mass

n = 20 / 18

n = 1.111 moles

Therefore:

Molarity = moles solute / volume

Molarity = 1.111 / 30 => 0.37 M
User Luis Lobo Borobia
by
8.1k points
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