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OpenStudy (anonymous):
Al2O3 has a density of 3.8 g/cm3. How many total atoms are present per cm3? How many total atoms are present per g?
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OpenStudy (sasquat):
Use the concept of dimensional analysis, start with what you're given and try to go from there....So you would start with 3.8g/cm3
OpenStudy (sasquat):
You also want to calculate the overall mass or molar mass of Al2O3 in order to figure out how many total atoms of each element there are
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