?(a) A sample of tetrachloroethylene, a liquid used in dry cleaning that is being phased

Chapter 1, Problem 1.35

(choose chapter or problem)

(a) A sample of tetrachloroethylene, a liquid used in dry cleaning that is being phased out because of its potential to cause cancer, has a mass of 40.55 g and a volume of 25.0 mL at \(25^{\circ} \mathrm{C}\). What is its density at this temperature? Will tetrachloroethylene float on water? (Materials that are less dense than water will float.)

(b) Carbon dioxide \(\left(\mathrm{CO}_{2}\right)\) is a gas at room temperature and pressure. However, carbon dioxide can be put under pressure to become a “supercritical fluid” that is a much safer dry-cleaning agent than tetrachloroethylene. At a certain pressure, the density of supercritical \(\mathrm{CO}_{2} \text { is } 0.469 \mathrm{~g} / \mathrm{cm}^{3}\). What is the mass of a 25.0-mL sample of supercritical \(\left(\mathrm{CO}_{2}\right)\) at this pressure?

Text Transcription:

25^{\circ} \mathrm{C}

(CO_2)

CO_2 is  0.469 g /cm^3

(CO_2)