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OpenStudy (anonymous):
A platinum wedding band contains 0.077 mol of platinum. How many atoms of platinum are in the 15-gram platinum wedding band? 3.09 x 1021 atoms 4.64 x 1022 atoms 7.82 x 1024 atoms 1.17 x 1026 atoms
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OpenStudy (jfraser):
How many atoms make up 1 mole? You've got 0.077 moles, or 7.7% of 1 mole. Find 7.7% of the number of atoms that make up 1 mole of Pt.
OpenStudy (anonymous):
thank you!!
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