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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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If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution
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How many moles of bromine are needed to produce 3.23 moles of potassium bromide
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