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For the purpose of constructing an instant ice/cold pack in which an ionic compound (salt) is dissolved in water, which of the following is the best statement for this example?

Which one of the common functional groups possesses 2 H-bond donors and 1 H-bond acceptor?

Some definitions/concepts: Select the best choice from the drop-down box in each question (A-G). Each question is worth 7 points. A. The heat change that occurs when ions in the gas phase condense into exactly one-mole of a solid ionic compound is called [lattice]. B. Which force of attraction is NEVER broken when a pure molecular substance evaporates from the liquid to the gas state? [covalent] C. An aqueous solution that contains an equilibrium concentration of solute at a fixed temperature is defined as [saturated]. D. The temperature in which water vapor in air below its equilibrium point condenses into liquid water is called [dewpoint]. E. Molecular substances like Urea (CH4N2O) are classified as non-electrolytes because they do not conduct electricity when dissolved in water. Salts like potassium nitrate, do conduct electricity in water and are classified as electrolytes. If a 3.0 m solution of urea in water freezes at -5.5 oC, then a 3.0 m solution of K(NO3)2 is predicted to freeze at [freeze] Celsius. F. Molecules with the same chemical formula in which the atoms are bonded together in different structures are called [isomers]. G. Solution properties that vary with total solute concentration regardless of the size, shape and / or charge of the solute. [colligative]

Based on the figure above, the boiling point of water under an external pressure of is ________ °C.

Why is water an extraordinary substance?

The yeast enzyme zymase was involved in the production of which one of the following?

Goals of the human genome project were which of the following? Choose the one best answer.

For the highest speed network which cable should be used?

Two pronged adapters can be used in the hospital for connecting medical equipment to line voltage. 

Which of the following choices is NOT an effect of electrical energy on the body?