Calculate the No. of moles in the following :64 g oxygen molecule (O2)12 g Helium
Question
Calculate the No. of moles in the following:
- 64 g oxygen molecule (O₂)
- 12 g Helium
Solution
To calculate the number of moles, we use the formula:
Number of moles = Mass of substance / Molar mass of substance
-
For Oxygen molecule (O2): The molar mass of O2 = 16 g/mol * 2 = 32 g/mol So, the number of moles = 64 g / 32 g/mol = 2 moles
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For Helium: The molar mass of Helium = 4 g/mol So, the number of moles = 12 g / 4 g/mol = 3 moles
So, there are 2 moles of Oxygen and 3 moles of Helium.
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