conversion of torr

Question

A student recorded the barometric pressure as 762 torr. On the next day a storm moved into the area and the student observed the barometric pressure to be 751 torr. What is the difference in the barometric pressure measured in mm Hg?

Answer 1

mm Hg are the same as torr, so 1 mm Hg = 1 torr.

762 torr - 751 torr = 11 torr = 11 mm Hg