Define a molecule.
What will be an ideal response?
A molecule consists of atoms and cannot be broken down further without changing the chemical composition of the substance.
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Under the Articles of Confederation, the relationship between the 13 states
A. improved to the point of total unity. B. was good economically but poor politically. C. led to a single currency. D. convinced many that a stronger central government was needed. E. was good politically but poor economically.
Which of the following will be effective in reducing low frequency noise from a mechanical room?
A) Sound batts in the stud space. B) Mounting the drywall on resilient channels. C) Acoustical liner on the walls.
A catalytic converter is being tested with an infrared pyrometer. Which is an acceptable result?
A) The outlet should be hotter than the inlet by 10% B) The temperature of a catalytic converter is the best test to perform to locate a restricted unit C) Both the inlet and outlet should be the same temperature after the converter reaches operating temperature D) The inlet should be hotter than the outlet by 10%
On a dual-fuel heat pump, why does the heat pump outdoor unit normally shut off when the furnace comes on?
A) With both operating, the hot supply air causes customer complaints. B) The hot air leaving the furnace would cause very high head pressures on the heat pump. C) The air can only go across one appliance at a time. D) The combined amp draw of the furnace and heat pump is too high.