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Topic: calculation molality  (Read 5526 times)

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Offline taylor

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calculation molality
« on: June 10, 2009, 08:53:27 PM »
hey guys just wondering if anyone could show me how to do this question. thanks

Calculate the molality of a 20.0 percent by mass ammonium sulfate
(NH4)2SO4 solution. The density is 1.117 g/mL.
]
answer is 2.10M

thanks for any help
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Offline Borek

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Re: calculation molality
« Reply #1 on: June 11, 2009, 04:13:48 AM »
Please read forum rules.

1 L of solution - what mass does it have?

How many moles of ammonium sulfate?

What mass of ammonium sulfate?

What mass of solvent?
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