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Osmium is the densest known element, with density 22.59 g/cm3. The tip of a fountain pen contains 152 mg of Osmium. What is the volume of Osmium in the pen in units of microliters, μL?
a. 0.152 μL
b. 6.73 μL
c. 0.149 μL
d. 149 μL
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