Chemistry, 03.01.2020 01:31, kiannadgarnica
Scientists plan to place detection devices outside earth's atmosphere to detect radiations from a star. which of the following best explains the type of detection device that the scientists would use. a. a radar, because high frequency microwaves are limited to the region outside earth's atmosphereb. special cameras, because high frequency uv rays are emitted by objects at very high temperaturesc. special cameras, because high energy uv rays are emitted by objects having very high massd. a radar, because high energy microwaves are produced from very hot objects
Answers: 3
Chemistry, 21.06.2019 13:30, kellywelly82
A48 g piece of ice at 0.0 ∘c is added to a sample of water at 7.4 ∘c. all of the ice melts and the temperature of the water decreases to 0.0 ∘c. how many grams of water were in the sample?
Answers: 1
Chemistry, 22.06.2019 00:00, annsmith66
What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17
Answers: 1
Chemistry, 22.06.2019 15:10, strodersage
Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?
Answers: 1
Scientists plan to place detection devices outside earth's atmosphere to detect radiations from a st...
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