[ Chemistry ] Open Question : analysis of an alloy by gas evolution?

1) Can an alloy be analyzed by this method if both metals produce the same quantity of hydrogen gas PER MOLE of metal? Explain your answer.

2) Can an alloy be analyzed by this method if both metals produce the same quantity of hydrogen gas PER GRAM of metal? Explain your answer.

3) Do you think it would be easier or harder to measure the quantity of HCl that reacted with the alloy than it is to measure the quantity of hydrogen gas evolved? Explain your answer.

Source: http://answers.yahoo.com/question/index?qid=20100409223433AAhv2n7

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