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A student takes a measured volume of 3.00 MHCl to prepare a 50.0 mL sample of 1.80 M HCl. What volume of 3.00 M HCl did the student use to make the sample?
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A student takes a measured volume of 3.00 MHCl to prepare a 50.0 mL sample of 1.80 M HCl. What volume of 3.00 M HCl did the student use to make the sample?

User Lucasmo
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1 Answer

6 votes
Volume of 3M solution: x
Moles in 3M solution: 3x

C = n/V
1,8 = 3x/0,05dm³
0,09 = 3x
x = 0,03dm³

A student need 0,03dm³ 3M HCl and 0,02dm³ of water.
User Catharsis
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