On a cool spring morning (T = 5.74 oC), a mechanic inflates a customer's tires to the manufacturer's recommended pressure of 32.9 PSI.  That afternoon, the temperature unexpectedly soars to 22 oC.  Assuming there is no change in the volume of the tires, determine the pressure in the tires in the afternoon. Give your answer in PSI.  (1 PSI = 6894.76 Pa)

A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures 21.0 cm wide and 25.2 cm high. The maximum safe pressure inside the vessel has been measured to be 8.80 MPa. For a certain reaction the vessel may contain up to 0.650 kg of carbon dioxide gas. Calculate the maximum safe operating temperature the engineer should recommend for this reaction. Write your answer in degrees Celsius. Round your answer to 3 significant digits. temperature: I °C

In an air-conditioned room at 21.0 ∘C, a spherical bubble had the diameter of 60.0 cm. When taken outside on a hot summer day, the bubble expanded to 61.0 cm in diameter. What was the temperature outside in degrees Celsius? Assume that the bubble is a perfect sphere and that the pressure and number of moles of air molecules remains the same.

The pressure on 2.5 L of hydrogen gas changes from 105 Kpa to 40.5 kPa. What will the new volume be if the temperature stays the same? (this question only involves pressure and volume)

A propane tank with 8.17 liters is purchased while the temperature was at  14.4 ∘∘C, you decided to use it the following day to bbq due to the nice sunny hot day.  The tank was placed in direct sunlight causing an increase in the temperature of the gas to 37.8 ∘∘C.  Calculate the new volume of the gas due to the change in temperature. The gas tank's release valve maintains the pressure constant.

Space probes to Mars have shown that its atmosphere consists mostly of carbon dioxide. The average temperature on the surface of Mars is –55°C with a pressure of 0.00634 atm. Compare the density of  CO2 on Mars’s surface with that on the Earth’s surface at 20°C and one atmosphere. (density on mars/density on earth=blank/1)

7. When detern ing the mass of a liquid, ras in a hurry and did not allow enough time for the temperature of the flask to reach the temperature of the boiling water bath. The student recorded the temperature of the gas as 100.0°C when it was only 80.0°C, Is the molar mass calculated by the student higher or lower than the accepted molar mass, or does this error have no effect on the calculated result? Briefly explain your answer # 2/HB Office DEPOTS b) If the student assumed the volume of the flask was 125 mL (as marked by the side of the flask) rather than measuring the volume experimentally, would the unknown's calculated molar mass be too high, too low, or unaffected? Explain. # 2/HB 4

10b

weather balloon containing 1.10 x 10^5 mol of neon gas has a volume of 2.70 x 10^6L at 1.00atm. Calculate the temperature of the balloon in kelvins.

Standard temperature and pressure are (1atm=760mmHg)