comparing compounds\n10 - gram samples of two...
comparing compounds\n10 - gram samples of two compounds made of carbon and hydrogen are burned and the amount of carbon dioxide produced is measured.\nsample a produces 27.5 g of carbon dioxide and is found to be about 75% carbon.\nsample b produces 31.4 g of carbon dioxide and is found to be about 86% carbon.\nwhich statement correctly describes the two substances?\nsample a and sample b are the same substance (law of definite proportions).\nsample a and sample b are different substances (law of multiple proportions).\nthere is not enough information to determine whether sample a & b are the same substance.
Answer
# Brief Explanations:
The Law of Definite Proportions states that a given compound always contains exactly the same proportion of elements by mass. Here, Sample A is about 75% carbon and Sample B is about 86% carbon. Since they have different mass - percentages of carbon, they are different substances. The Law of Multiple Proportions deals with different compounds formed by the same elements in different whole - number ratios. But the key here is that the mass percentages of carbon are different, indicating they are different substances.
# Answer:
Sample A and Sample B are different substances (Law of Multiple Proportions).