# The Naked Scientists Forum

### Author Topic: How do you calculate the molarity of a solution?  (Read 4820 times)

#### tjolly__

• Guest
##### How do you calculate the molarity of a solution?
« on: 19/05/2008 07:26:14 »
what is the molar mass of a solute if 62.0g of the solute in 125g of water produce a 5.3m solution?
« Last Edit: 19/05/2008 23:56:16 by chris »

#### lightarrow

• Neilep Level Member
• Posts: 4586
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##### Re: How do you calculate the molarity of a solution?
« Reply #1 on: 19/05/2008 08:13:48 »
what is the molar mass of a solute if 62.0g of the solute in 125g of water produce a 5.3m solution?
I assume you are talking about molal concentration.

n°moles solute = 5.3*0.125 = 0.6625

molar mass = 62.0/0.6625 = 93.58 g/mol

#### lyner

• Guest
##### Re: How do you calculate the molarity of a solution?
« Reply #2 on: 19/05/2008 17:57:54 »
There you go again - helping kids with their homework assignments.
You are far too nice to them!

#### The Naked Scientists Forum

##### Re: How do you calculate the molarity of a solution?
« Reply #2 on: 19/05/2008 17:57:54 »