The correct calculation is shown below. 45.9 grams upper H subscript 2 upper o, with grams upper H subscript 2 upper O crossed out times StartFraction 1 mole upper H subscript 2 upper O over 18.02 grams upper H subscript 2 upper O, with grams upper H subscript 2 upper O crossed out EndFraction equals 2.55 moles upper H subscript 2 upper O. Did you perform the calculation correctly? Yes, I answered it correctly.No, I used the wrong conversion factor.No, I used the correct conversion factor, but I did the math wrong.