Answer
A conversion factor can be inverted to give a second conversion factor.
Work Step by Step
Many problems in chemistry and the health sciences require you to change from one unit to another unit. You make changes in units every day. For example, suppose you worked 2.0 hours (h) on your homework, and someone asked you how many minutes that was. You would answer 120 minutes (min). You changed only the unit of measurement used to express the time.
Any equality can be written as fractions called conversion factors with one of the quantities in the numerator and the other quantity in the denominator. Be sure to include the units when you write the conversion factors. Two conversion factors are always possible from any equality.
