- A number is selected, at random, from the set {1,2,3,4,5,6,7,8}. Find: 1) P(odd) 2)p(prime|odd)?

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Is the Solar System headed towards, or away, from the Crab Nebula? Can we solve the three-body problem with computers? -6(-8b+7)=-90? What is the frequency (in reciprocal seconds) of electromagnetic radiation with a wavelength of 1.45 cm? Enter in scientific notation? Zn(s) + 2 HCl(aq) -> ZnCl2(aq) + H2(g)
How many milliliters of 2.50 M HCl(aq) are required to react with 5.15 g of Zn(s)?