The total number of atoms in 0.111 mol of Fe(CO)3(PH3)2is... A) 15 B) 9.03 x 10^

Question

The total number of atoms in 0.111 mol of Fe(CO)3(PH3)2is... A) 15 B) 9.03 x 10^24 C) 1.00 x 10^24 D) 1.67 MY PROFESSOR'S ANSWER IS C.............. WHY???? On my exam I said the answer was D and I was very confident inmy answer.... In 1 mol there are 15 atoms, so I took 0.111 mol x 15 atomsand got answer D.... WHAT AM I DOING WRONG...... The total number of atoms in 0.111 mol of Fe(CO)3(PH3)2is... A) 15 B) 9.03 x 10^24 C) 1.00 x 10^24 D) 1.67 MY PROFESSOR'S ANSWER IS C.............. WHY???? On my exam I said the answer was D and I was very confident inmy answer.... In 1 mol there are 15 atoms, so I took 0.111 mol x 15 atomsand got answer D.... WHAT AM I DOING WRONG......

Explanation / Answer

Please take note the questions is asking the total NUMBER of atoms,not number of mole of atoms Number of moles of atom = 15 Total number of atoms = 15 x 0.111 x 6.022 x 1023 = 1.00x 1024 Thus, the answer is (C) Hope this helps!

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