Which statement correctly compares radio waves and microwaves?
Only radio waves are used...
Which statement correctly compares radio waves and microwaves?
Only radio waves are used in communication.
Radio waves have lower radiant energy than microwaves.
Radio waves have a higher frequency than microwaves.
Radio waves have shorter wavelengths than microwaves.
Answers: 3
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Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine
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Chemistry, 22.06.2019 15:50
Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?
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Chemistry, 22.06.2019 17:30
Air can be considered a mixture. which statement does not explain why?
Answers: 1
Chemistry, 22.06.2019 22:00
4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
Answers: 2
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