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If 50% of a radioactive element remains after 4000 years what is its half-life?
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Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt
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Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
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If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?
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If 50% of a radioactive element remains after 4000 years what is its half-life?...
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