Reference no: EM132560768

Please show work or explanation for the following:

1. A student attempts to find the volume of an ice cube by volume displacement. He notices that a 2.00 g ice cube floating in a glass of water displaces 1.90 mL. He concludes that the density of ice is 4.00 g/1.90 mL = 1.05 g/mL What is incorrect about his conclusion?

2. Suppose you have three beakers, each filled with a different liquid. One beaker contains hexane (d = 0.66 g/mL). One beaker contains carbon tetrachloride (d = 1.59 g/mL). One beaker contains water (d = 1.00 g/mL). You take a rubber stopper and drop it in each beaker. The stopper floats in the water and carbon tetrachloride, but sinks in the hexane. Use this information to estimate the density of the stopper (or a range of possible values). F

For the following questions, use the dimensional analysis method to find the desired quantities. Make sure to include units and the correct number of significant figures.

3. What is the mass, in pounds of 2.00 ft3 of lead? The density of lead is 11.3 g/cm3.

4. If a cube of plastic has a density of 0.728 g/cm3 and a mass of 12.0 g, then what is the length of the cube's side?

5. A 10.0 g mineral sample has a volume of 3.28 cm3 . How many kilograms should a 3.10 m3 sample weigh?

6. A ring, weighing at 29.60 grams, is made up of an unknown pure substance. To determine what it is made up of, you measured out 5.00 mL of water onto a graduated cylinder. When you placed the ring in the cylinder, the water level rose to the 6.53 mL mark. a. What is the density of the ring?