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Chemistry, 21.06.2019 23:00
A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?
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Chemistry, 21.06.2019 23:00
The drawing represents the movement of particles in a substance. what changes of state can this substance undergo
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Chemistry, 22.06.2019 15:00
Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat
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