Heating a solid until it passes directly from the solid phase into the gaseous phase. Separating a liquid from an insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid. The process of vapor returning to the solid phase without a liquid phase in between. Heating a mixture to vaporize a volatile liquid component to make the remaining component dry. Separating a solid from a liquid using a porous material, such as paper, charcoal, or sand, as a filter. Using a solvent to selectively dissolve one or more components from a solid mixture. Answer Bank extraction filtration decantation deposition sublimation evaporation

A solution of ethanol (CH,CH,OH) and water that is 90.% ethanol by mass is boiling at 81.9 °C. The vapor is collected and cooled until it condenses to form a new solution. Calculate the percent by mass of ethanol in the new solution. Here's some data you may need: normal vapor pressure density boiling point at 81.9 °C g 0.79 mL ethanol 78. °C 865. torr 100. °C 1.00 mL 389. torr water Be sure your answer has the correct number of significant digits. Note for advanced students: you may assume the solution and vapor above it are ideal. ?

You leave the house wearing a cotton T-shirt and are surprised by a sudden rainstorm. You notice that the water soaks into the T - shirt whereas it just beads up on your raincoat. In this example, are the adhesive forces or cohesive forces stronger between water and your T - shirt ? Between water and your raincoat ? Explain

Calculate the mass of oxygen (in mg) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.21 and the Henry's law constant for oxygen in water at this temperature to be 1.3 × 10-3 M/atm. A) 49.4 mg B) 23.5 mg C) 9.87 mg D) 27.3 mg E) 13.7 mg

A dry-cleaning plant used carbon tetrachloride (CCl4) as a cleaning solvent until it was shut down because CCl4 was found to cause cancer and had been leaking into the groundwater.  The plant owner offered to switch to liquified carbon dioxide instead and was allowed to reopen.  Within 6 months cancer cases returned to normal.  Explain whether the use of liquified carbon dioxide is a long term, safer environmental alternative to CCl4.

3. Maximum solubility of an ionic compounds in water depend on different sets of conditions. Out of five sets of conditions (given below), which one is the best for getting maximum solubility? A. The magnitude of the lattice energy should be large, and the enthalpy of hydration of the ions should be large. B. The enthalpy of hydration (Delta H) of the cation should be equal to the enthalpy of hydration of the anion, regardless of the magnitude of the lattice energy C. The magnitude of the lattice energy should be small, and the enthalpy of hydration of the ions should be small.   D. The magnitude of the lattice energy should be small, and the enthalpy of hydration of the ions should be large. E. The magnitude of the lattice energy should be large, and the enthalpy of hydration of the ions should be small.

Select the compound that will have the lower equilibrium vapor pressure based on predicted intermolecular forces. pentane (C5H12) phosphorus tribromide

Mars has a very thin atmosphere with a pressure of 610 Pa, less than 1% of the pressure found on Earth. The atmosphere on Mars is also composed of 95% CO2. Calculate the mass of CO, that would dissolve in 1.0 kg of water on Mars at 0 °C. Data: Henry's Law constant for CO2 at 0 °C is 7.28 x 102 atm 0.44 mg 0.26 mg 19 mg 0.89 mg 7.9 mg

A student obtained a mixture of three organic solvents that are miscible in each other. Solvent XY has a boiling point of 67.8 °C, solvent XZ has a boiling point of 34.2 °C and solvent XD has a boiling point of 102.6 °C. Describe a detailed procedure that allows the student to purify this mixture.

What properties of an element and/or water causes particular elements on the periodic table (Potassium for example) to react violently with water?