11.79 Ethylene glycol (HOCH2CH2OH) is the major component of antifreeze. It is a slightly viscous liquid, not very volatile at room temperature, with a boiling point of 198 °C. Pentane (C5H12), which has about the same molecular weight, is a nonviscous liquid that is highly volatile at room temperature and whose boiling point is 36.1 °C. Explain the differences in the physical properties of the two substances.

The vapor pressure of ethanol (C2H5OH) at 19 °C is 40.0torr. A 1.00-g sample of ethanol is placed in a 2.00 L containerat 19 °C. If the container is closed and the ethanolis allowed to reach equilibrium with its vapor, how manygrams of liquid ethanol remain?

Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points, and the third column to explain the order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select '2' in the second column next to the liquid with the next higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boiling point, '2' next to the liquid with the next higher boiling point, and so on. Note: the density of water is 1.00 g/mL. solution freezing point boiling point (choose one) ↑ 6.7 g of potassium iodide (KI) dissolved in 350. mL of water (choose one) O (choose one) (choose one) ↑ 6.7 g of hydroiodic acid (HI) dissolved in 350. mL of water 6.7 g of sucrose (C₁2H22011) dissolved in 350. mL of water (choose one) (choose one) î 350. mL of pure water (choose one) ✪ (choose one) × Ś ?

Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points, and the third column to explain th order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select '2' in the second column next to the liquid with the next higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boiling point, '2' next to the liquid with the next higher boiling point, and so on. Note: the density of water is 1.00 g/mL. solution freezing point boiling point 3.6 g of calcium chloride (CaCl2) dissolved in 300. mL of water (choose one)v (choose one) v (choose one) (choose one) 3.6 g of propylene glycol (C3H8O2) dissolved in 300. mL of water 3.6 g of glucose (C6H1206) dissolved in 300. mL of water 300. mL of pure water (choose one) 4(highest) く (choose one) 1(lowest) x 5