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A 1-g sample of the compound hydrogen chloride was analyzed and found to be 2.74 percent hydrogen and 97.3 percent chloride. What percentage of hydrogen is present in a 2-g sample of hydrogen chloride?

A. 1.37%
B. 2.74%
C. 5.48%
D. 97.3%

Answer :

Final answer:

The percentage of hydrogen in a 2-g sample of hydrogen chloride remains the same as in a 1-g sample, which is 2.74%. This is because percentage is based on the ratio of the parts to the whole regardless of the size of the sample.

Explanation:

When calculating percent composition regardless of the size of the sample, the percentage stays the same. This is because percentage is based on the ratio of the parts to the whole regardless of the size of the sample. Using the provided information that in a 1-g sample of hydrogen chloride 2.74% was hydrogen and 97.3% was chloride, the same percentages would apply to any other sample size of hydrogen chloride, including a 2-g sample.

So, the answer is B. 2.74%, which is the percentage of hydrogen in a 2-g sample of hydrogen chloride.

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