Review for the 2nd Bimester

1.    How does the volume of an adult´s lungs, about 5.0L at sea level (1 atm), change when he dives to a depth at which water pressure is 2.3 atm?

2.    At 19C a volume of air takes up 9.0ml in an expandable container. What is ots volume after it is heated to 50C?

3.    A balloon with a volume of 1.50L is put in liquid nitrogen (-195.8C), shrinking its volume to 0.40L. What was its original temperature?

4.    A fossil weighing 30.0N has an area of 0.25m² that is in contact with the table. How much pressure does it exert on the table? Give your final answer in mmHg

5.    If a breeze pushes on a 2.0m2 door with a total force of 60N, how much pressure has been applied?

6.    A gas has a volume of 4.0 L at a pressure of 500mmHg. If the pressure is doubled, what will be the new volume?

7.     A  2.00 L  sample of a gas is at 740.0 mmHg pressure. What is its volume at standard pressure? (Give your final answer in PSI)

 

8.    A gas is collected and found to fill 2.85 L at 30.0°C. What will be its volume at standard temperature? (Hint: Consider that the standard temperature is equal to 0 Celsius degree)

 

9.    A container holds 50.0 mL of nitrogen at 20° C and a pressure of 736 mm Hg.  What will be its volume if the temperature increases by 35° C?

 

10.  A sample of hydrogen has an initial temperature of 50.° C. When the temperature is lowered to -5.0° C, the volume of hydrogen becomes 212 cm³. What was the initial volume of the hydrogen in m³?

 

11.  The highest surface temperature on any of the solar system’s planets is found on Venus. Partly because of its nearness to the sun and partly because of the extreme pressure of its atmosphere, the average daytime temperature on Venus is 450°C. What is this temperature in degrees Fahrenheit and in kelvins?

 

12.  In contrast to Venus, the coldest temperature yet measured on the surface of any body in the solar system is −240°C. This temperature was detected by Voyager 2 as it passed by Neptune’s largest moon, Triton. What is Triton’s surface temperature in degrees Fahrenheit and in kelvins?

 

13.  The warmest temperature in Antarctica was recorded at the Vanda Station on the Scott Coast. On January 5, 1974—early summer in the southern hemisphere—a high temperature of 17°C was reached. Express this temperature in degrees Fahrenheit and kelvins.

 

14.  A recipe for bread states that the dough must bake for 40 minutes at a temperature of 250°C. The oven you are using has temperature markings on the dial that are in units of degrees Fahrenheit. At what Fahrenheit temperature must the bread be baked? What would this temperature be in kelvins?