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Calculate the number of molecules present in 0.750 mol of mgo.
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The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.
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Give the orbital configuration of the phosphorus (p) atom.
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What is the hydroxide ion concentration of a solution with a ph of 13...
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