A sample of oxygen was collected in a tube over water. In the tube, there is a mixture of oxygen gas and gaseous water (steam). The total pressure of the gas mixture is 760. Torr. If the pressure of gaseous water is 23. 8 torr, what is the pressure of the pure oxygen?
a. 99.8 torr
b. 736 torr
c. 740 Torr
d. 783 torr.