What is wt/wt ration -- it was on the aamc 7 exam

[theDr.]

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I remember this from chemistry -- but it wasn't cover in EK...isn't there a wt/vol ratio also -- are these in the kaplan books - thanks

 

[Cerberus]

I remember this from chemistry -- but it wasn't cover in EK...isn't there a wt/vol ratio also -- are these in the kaplan books - thanks

what does it sound like...

 

[blz]

wt-wt % just means that whatever solute you're dissolving is x% of the total weight of the solution. So for that problem, you assume 10grams of solution of which 10% (1 gram) is Pb(NO3)2. The rest (9grams) would be water. Then you just use the standard mole fraction eqn to find it using those values. I believe it works out to .006

 

[Direct Laryngoscopy]

took me ten minutes to realized what they were saying