maeighwlhs maeighwlhs

05-03-2021
Chemistry

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Please help! A chemist adds 6.5 L of concentrated (12 M) hydrochloric-acid solution to 15 L of water. What is the new solution’s concentration?

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samihaela samihaela

12-03-2021

Answer:

3.63 M

Explanation:

M1 = 12M

V1 = 6.5 L

V2 = 15 + 6.5 = 21.5 L

Number of moles does not change so M1V1 = M2V2

M2 = M1V1/V2 = 12 x 6.5/21.5 = 3.63 M

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