How many moles of oxygen (O) atoms are in a sample of 3.98 × 1023 atoms? 0.661 mol O 1.51 mol O 6.60 × 1022 mol O 2.40 × 1047 mo
1 answer:
To find moles from any number of atoms, always divide by the constant called Avogadro's Number. This number is representative of the number of atoms or molecules in a mole of any substance and is equal to about 
.
So, for this problem, we take the number of atoms of oxygen and divide by Avogadro's Number.
Answer: 0.661 moles (after rounding)
Make sense?
So, for this problem, we take the number of atoms of oxygen and divide by Avogadro's Number.
Answer: 0.661 moles (after rounding)
Make sense?
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