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### Topic: how to calculate the molality of a solid solution (alloy for example)  (Read 9174 times)

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#### cell_491

• Guest ##### how to calculate the molality of a solid solution (alloy for example)
« on: April 24, 2005, 08:39:01 PM »
heres an exmple of the type of problem im stumped on
what is the molality of a solid solution containing .125g of chromium and 81.3g of iron?
(the answer is .0296m but i have to show work and i dont know how to do it )

#### Mitch ##### Re:how to calculate the molality of a solid solution (alloy for example)
« Reply #1 on: April 24, 2005, 08:45:41 PM »
First things first.

Molarity is moles/volume

Have you manipulated your given information into something that has units of either volume or moles?
Most Common Suggestions I Make on the Forums.
1. Start by writing a balanced chemical equation.
2. Don't confuse thermodynamic stability with chemical reactivity.
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#### cell_491

• Guest ##### Re:how to calculate the molality of a solid solution (alloy for example)
« Reply #2 on: April 24, 2005, 08:50:33 PM »
allright i got .0024mol of Cr and 1.455mol of Fe

#### cell_491

• Guest ##### Re:how to calculate the molality of a solid solution (alloy for example)
« Reply #3 on: April 24, 2005, 08:58:47 PM »
nvm i figured it out the equation is .125g/52g/(81.3g/1000)= .0296m

#### AWK

• Retired Staff
• Sr. Member
• • Posts: 7982
• Mole Snacks: +555/-93
• Gender:  ##### Re:how to calculate the molality of a solid solution (alloy for example)
« Reply #4 on: April 25, 2005, 02:16:31 AM »
MOLALITY - moles per kg of solvent
AWK