A chemist decomposes several samples of carbon monoxide into carbon and oxygen and weighs the resultant elements. The results are shown in the table.

a. Do you notice a pattern in these results? Next, the chemist decomposes several samples of hydrogen peroxide into hydrogen and oxygen. The results are shown in the table:

b. Do you notice a similarity between these results and those for carbon monoxide in part a?

c. Can you formulate a law from the observations in a and b?

d. Can you formulate a hypothesis that might explain your law in c?

Solution 35E: There are two types of number in scientific work. (i) exact - exactly the values are known when it is measured. The values which are obtained from any measurement is completely certain value (ii) Inexact number- uncertainty in the numbers. The measured values are uncertain. (a) the mass of a 3 by 5-inch index card It is an inexact number. The mass of a 3 by 5 inch index card is measured with different scale. So there will be always have a possibility to find an instrumental error. ((b) the number of ounces in a pound, It always an exact number. This is because 1 pound = 16 ounce. It is always be the same and the value is certain. (c) the volume of a cup of Seattle's Best coffee This is an inexact number. This is because,...