The mole fraction of oxygen in a container is 42%. If the total pressure in the container is 780 torr, what is the pressure of oxygen in the container? a. 1860 torr
b. 780 torr
c. 32760 torr
d. 328 torr

As shown in fig. p3.64, a closed, rigid tank fitted with a fine-wire electric resistor is filled with refrigerant 22, initially at 2108c, a quality of 80%, and a volume of 0.01 m3. a 12-volt battery provides a 5-amp current to the resistor for 5 minutes. if the final temperature of the refrigerant is 408c, determine the heat transfer, in kj, from the refrigerant.

Write the correct abbreviation for each metric unit

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car