You and your lab partner are asked to determine the density of an aluminum bar. The mass is known accurately to 4 significant fi
gures. You use a simple metric ruler to determine its size and calculate the results in column A. Your partner (using a precision micrometer for the first time) obtains the results in column B. (The accepted density of aluminum is 2.702 g/cm3.) Method A results (g/cm3) Method B results (g/cm3)
In order to calculate the average density for each method, we need to add the data for each method, and then divide the result by the number of measurements (in this case is 4 for both methods):
The answer is powder because if it was a small crystal it the molecules are tightly compact same with the small cube but there less compact, powder is loose and more spread out and easier to mix so it would react the fastest
