How to calculate the number of atoms of an element in a compound (For example- Calculate the number of oxygen atoms in 102 g of CO2)? Please tell.
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88gCO2= 2 moles of CO2. One molecule consists of 2 oxygen atoms.
No. of oxygen atoms =2×2×6.02×1023=24.08×1023
CO molecule has one oxygen atom.
Mass of CO containing 24.08×1023 oxygen atoms
=6.02×102328×24.08×1023=112g
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