Question

How many H atoms are in 92.5g of isopropanol (rubbing alcohol), C3H8O? Enter your answer in...

How many H atoms are in 92.5g of isopropanol (rubbing alcohol), C3H8O? Enter your answer in scientific notation.

Homework Answers

Answer #1

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

We know,

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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