Example Exercise 2 Density of a Rubber Stopper A rubber stopper weighing 8.453 g displaces 6.5 mL of water in a graduated cylinder (Figure 2). What is the density of the rubber stopper? Solution: Dividing the mass of the rubber stopper by its volume, we have 8.453 g 1.3 g/mL 6.5 mL In this example, the volume has only two digits. Thus, the density is limited to two significant digits. We will also determine the density of a solid. The volume of any solid object with regular dimensions can be found by calculation. For example, the volume of a rectangular solid object is calculated by multiplying its length times its width times its thickness. BRUCE

An 11 lb bowling ball has a circumference of 27 inches. Calculate the density of the bowling ball and determine whether it will float or sink if placed in water. Ignore the holes in the bowling ball.

A bone fragment displaces 4.27 ml of water and is found to have a mass of 4.646 g. What is the density of the bone fragment? (do not include units in your answer, just the numeric part and round off to the correct number of singificant digits)

Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What volume of carbon dioxide would be produced by this reaction if  1.22cm^3 of oxygen were consumed? Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits.