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3 years ago

a solution contains 2.1 moles of HCl and has a molarity of 6.00 M what volume of the solution occupy.

1 answer:

8 0

Use the formula C = n / V

We are given the moles, n = 2.1
And the molarity, C = 6

Rearrange the formula with V as the subject:

V = n / C

Sub in your values,

V = 2.1 / 6
= 0.35 L

Hope this helped! :)

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How many milliliters of ammonium sulfate solution having a concentration of 0.218 M are needed to react completely with 62.6 ml

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Answer:

330 mL of (NH₄)₂SO₄ are needed

Explanation:

First of all, we determine the reaction:

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(First, we convert the volume from mL to L) → 62.6 mL . 1L/1000 mL = 0.0626L

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Ratio is 2:1. Therefore we make a rule of three:

2 moles of hydroxide react with 1 mol of sulfate

Then, 0.144 moles of NaOH must react with (0.144 .1) /2 = 0.072 moles

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3 years ago

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