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Science-Related Homework Help Chemistry Topic started by: vshiroky on Mar 2, 2014



Title: Question in comment
Post by: vshiroky on Mar 2, 2014
Suppose that your instructor gives you two samples and claims that they are both aluminum phosphide (AlP). Through a series of tricky chemical reactions, your instructor has you decompose both samples into the constituent aluminum and phosphorous, and you weigh each of your sample components on the analytical balance. You find that one sample produced 3.85 g Al and 4.42 g P, while the other produced 3.05 g Al and 3.94 g P. Are these results consistent with the law of constant composition  :o


Title: Re: Question in comment
Post by: padre on Mar 2, 2014
Sample 1: 6.3 g Ca/2.54 g S = 2.5

Sample 2: 3.4 g Ca/1.90 g S = 1.8

Answer: No, the results of the ratio between the two samples is different, therefore they are not consistent with the law of constant composition.


Title: Re: Question in comment
Post by: doubleu on Mar 2, 2014
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