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Topic: percentage composition of alloys...  (Read 3729 times)

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Offline xxdeathxnotexx

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percentage composition of alloys...
« on: April 30, 2009, 07:03:34 PM »
Can someone please explain to me how to find the percentage composition of alloys... is it similar to finding the percentage composition normally?

eg: an alloy used in aircrafts consists of Al, Cu and Mg. An 11.34g sample of the alloy was treated with alkali to disolve the Al. Leaving a residue of mass 2.73g. This residue was then treated with dilute HCl to disolve the Mg. The remaining residue has a mass of 0.90g. Calculate the % composition of the alloy.

can anyone help me please? ???
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Offline Borek

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Re: percentage composition of alloys...
« Reply #1 on: April 30, 2009, 07:17:25 PM »
What was the final resiude?

How much of Al was dissolved in NaOH?

How much of Mg was dissolved in HCl?
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