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Mole Calculations Part Three
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Note, there are 2 O's for each CO2 molecule
Calculate the number of O atoms in 250. g of CO2. 250. g CO2 x 1 mole x x 1023 molec x 2 atoms O = x1024 atoms O 44.0 g 1 mole 1 molec CO2 O C Note, there are 2 O's for each CO2 molecule
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Calculate the mass of CuSO4.6H2O that contains 6.93 x 1025 atoms of O.
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There are 10 O atoms in one formula unit
Cu2+ Octahedron
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Calculate the mass of CuSO4. 6H2O that contains 6.93 x 1025 atoms of O.
x 1 FU x 1 mole x g = x 103 g 10 atoms O 6.02 x 1023 FU 1 mole
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Calculate the mass of P2Cl5 that contains 2.6 x 1026 atoms of Cl.
2.6 x atoms Cl x 1 molecs x 1 mole x g = x104 g 1 mole 5 atoms Cl 6.02 x 1023 molec
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Calculate the atoms of Cl in 25.0 g of P2Cl5.
25.0 g P2Cl5 x 1 mole x x 1023 molec x 5 atoms Cl = x 1023 at Cl 1 molec 239.5 g 1 mole
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