Please clarify what M means

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Giselle Littleton 1F
Posts: 78
Joined: Wed Sep 18, 2019 12:20 am

Please clarify what M means

Postby Giselle Littleton 1F » Wed Oct 02, 2019 1:57 pm

The beginning of a problem states that a solution is diluted with 1.00 L of 0.4M potassium chloride. Does 0.4M stand for 0.4 mols or O.4 mols/L (molarity)?

Lauren Haight 1E
Posts: 73
Joined: Wed Sep 18, 2019 12:15 am
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Re: Please clarify what M means

Postby Lauren Haight 1E » Wed Oct 02, 2019 2:01 pm

M stands for molarity. Molarity is defined as the number of moles of solute per liter of solution. So, I would say that it is the latter choice, in which units are mol/L.
Last edited by Lauren Haight 1E on Wed Oct 02, 2019 2:01 pm, edited 1 time in total.

LReedy_3I
Posts: 51
Joined: Fri Aug 30, 2019 12:17 am

Re: Please clarify what M means

Postby LReedy_3I » Wed Oct 02, 2019 2:01 pm

Capital M is molarity, so mol/L

ZainAlrawi_1J
Posts: 71
Joined: Sat Aug 24, 2019 12:16 am

Re: Please clarify what M means

Postby ZainAlrawi_1J » Wed Oct 02, 2019 2:01 pm

Capital M denotes molarity, which is moles of solute per liter of solution.

Gabriella Bates 2L
Posts: 113
Joined: Thu Jul 11, 2019 12:15 am

Re: Please clarify what M means

Postby Gabriella Bates 2L » Wed Oct 02, 2019 2:05 pm

Capital M stands for molarity, which is mols/liter. When you see "0.4M," you can read it as "0.4 molar," which helps me remember that it is talking about molarity.

xenamclean_1G
Posts: 51
Joined: Sat Jul 20, 2019 12:15 am

Re: Please clarify what M means

Postby xenamclean_1G » Wed Oct 02, 2019 3:00 pm

The capital M in this problem means Molarity (mols/L).


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