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SECTION B: STRUCTURED QUESTIONS Answer the following questions each on a separate page.

Osmosis is the diffusion of small molecules that can fit across semi-permeable membranes.

Where, in the above picture, would water most likely be found?

When two solutions are separated by a semi-permeable membrane, the water of the ___________ solution will be drawn to the ____________ solution.

The system shown in Figure 3 is a(n) ________ heat pump

Ground source heat pumps can only be used as air conditioning units, not as heating units.

Electric demand charges are a large portion of the cooling bill for large buildings.  Since cooling typically contributes to peak demand, the cost per kWh used for cooling is effectively higher than the average cost per kWh.

What is the purpose of superheat on the low side?

What causes some of the refrigerant to vaporize in an expansion device?