Units on Quiz #1 Preparation  [ENDORSED]

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Units on Quiz #1 Preparation

Postby Rachael_1H » Sun Oct 11, 2015 10:57 pm

"Calculate the volume of .642 M KOH that should be used to make 1.00 L of .101 M KOH."

Why is the answer to this in mL when the unit of L is used within the problem? The correct answer to the problem is 157 mL according to the answer key, but would answering the question with .157 L be considered incorrect?

How does one determine which units should be used?

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Re: Units on Quiz #1 Preparation  [ENDORSED]

Postby Chem_Mod » Sun Oct 11, 2015 11:23 pm

In this instance mL is just representing a different scientific notation, or scale, of liters. They're both representing volume. It would be incorrect to give an answer in grams, mols, molarity, etc. You wouldn't lose any points for giving an answer in either mL or L.

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