alainzee5 alainzee5

15-09-2017
Chemistry

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What is the number of moles of solute in 250 mL of a 0.4 M solution ?

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haneylia haneylia

15-09-2017

.4 M means that in 1 Liter of solution there are .4 moles.

Molarity x Liters = Moles

We have molarity, so convert mL to liters

250 mL x 1000mL/1 Liter = .25 L

Now, set up the equation

.4 M x .25 L = .1 moles of solute

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