Chemistry, 18.04.2021 22:50 jasminebaeeecx
What is the frequency of a light source that has a wavelength of 430 NM? What is the energy of this wave?
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Chemistry, 22.06.2019 12:00, sophiaa23
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
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Chemistry, 22.06.2019 13:00, cnfndbxbfbdb2031
Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these
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Chemistry, 22.06.2019 13:30, amandajbrewerdavis
Table sugar completely dissolved in water is an example of a?
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What is the frequency of a light source that has a wavelength of 430 NM? What is the energy of this...
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