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How many atoms are contained in a block of aluminum metal measuring 8 mm x 5 mm x 12 mm? The density of aluminum is 2.7 g/cm3.

How many atoms are contained in a titanium sphere having a diameter of 18 mm? The density of titanium is 4.506 g/cm3.

Calculate the volume of 5.2 mol of water. Assume that the density of water is 1 g/mL.

Natural uranium consists almost entirely of 238U. To operate a nuclear power reactor, the fuel must be enriched in a lighter fissionable isotope, 235U. If the average molar mass of uranium in a reactor is 236.98, what percent of the fuel consists of the lighter isotope?

Assume that the masses of the two isotopes are exactly 235 and 238 amu.

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Category:- Chemistry
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