1. How many particles are present in 800 grams of copper (II) sulfide, CuS? The molar mass of CuS is 95.611 g/mol.
2. How many particles are present in 50 grams of aluminum oxide, Al2O3? The molar mass of Al2O3 is 101.961 g/mol.
3. How many particles are present in 150 grams of calcium oxide, CaO? The molar mass of CaO is 56.077 g/mol.
4. How many particles are present in 39 grams of sulfuric acid, H2SO4?
5. How many particles are present in 345 grams of hexane, C6H14?
Answers: 2
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