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Sagot :
Answer:
52.0 gof CO2 contains 7.1 *10^23 molecules
1 molecule of CO2 has a mass of 7.3*10^-23 grams
Explanation:
Step 1: Data given
Mass of CO2 = 52.0 grams
Molar mass of CO2 = 44.01 g/mol
Number of Avogadro = 6.022 * 10^23 / mol
Step 2: Calculate moles of CO2
Moles CO2 = Mass CO2 / molar mass CO2
Moles CO2 = 52.0 grams / 44.01 g/mol
Moles CO2 = 1.18 moles
Step 3: Calculate molecules in 1.18 moles CO2
Number of molecules = 1.18 moles * 6.022*10^23 = 7.1 *10^23 molecules
1 molecule of CO2
Number of moles = 1 / 6.022*10^23
Number of moles = 1.66 *10^-24
Mass CO2 = 1.66*10^-24 moles * 44.01 g/mol
Mass CO2 = 7.3*10^-23 grams
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