Question #1a210

1 Answer
Meave60
Jan 9, 2015

The answer is "16 mL".

In order to solve this problem, you need to use the following equation "M"_1"V"_1" = "M"_2"V"_2", in which "M" is molarity and "V" is volume.

Known/Given:
"M"_1" = "6.0 M HCl"
"M"_2" = "0.800 M HCl"
"V"_2" = "120.0 mL"

Unknown:
"V"_1"

Equation:
"M"_1"V"_1" = "M"_2"V"_2"

Solution: Rearrange the equation to isolate "V"_1" and solve for "V"_1".

"V"_1" = "M"_2"V"_2"/M"_1" = "0.800 M x 120.0mL"/"6.0 M" = "16 mL"

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