How many H atoms are in 92.5g of isopropanol (rubbing alcohol), C3H8O? Enter your answer in scientific notation.
Answer – We are given, mass of isopropanol (C3H8O) = 92.5 g
Moles of isopropanol (C3H8O) = 92.5 g/60.095 g.mol-1
= 1.54 moles
1 moles of C3H8O = 8 moles of H
So, 1.54 moles of C3H8O = ?
= 12.31 moles of H
Now mole to atoms
1 moles of H = 6.023*1023 atoms
So, 12.31 moles of H = ?
= 7.42*1024 atoms of H
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