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5. [-/2 Points] DETAILS MY NOTES OSCOLPHYS2 13.1.P.006. ASK YOUR TEACHER PRACTICE ANOTHER One of the hottest temperatures ever recorded on the surface of Earth was 110F in Death Valley, CA. What is this temperature in elsius degrees? What is this temperature in Kelvin? Additional Materials meBook Submit Answer 6. [-/2 Points] DETAILS MY NOTES OSCOLPHYS2 13.2.P.016. ASK YOUR TEACHER PRACTICE ANOTHER (a) Suppose a meter stick made of steel and one made of invar (an alloy of iron and nickel) are the same length at 0"C. What is their difference in length in millimeters at 39.0"C? mm (b) Repeat the calculation for two 31.0 m long surveyor's tapes. mm Additional Materials aeBook Submit Answer 7. [-/1 Points] DETAILS MY NOTES OSCOLPHYS2 13.3.P.028. ASK YOUR TEACHER PRACTICE ANOTHER Calculate the number of moles in the 2.30 L volume of air in the lungs of the average person. Note that the air is at 37.0 C (body temperature) and atmospheric pressure. mol Additional Materials eBook Submit Answer 8. [-/1 Points] DETAILS MY NOTES OSCOLPHYS2 13.3.WA.027. ASK YOUR TEACHER PRACTICE ANOTHER The density of gas atoms at a certain location in the space above our planet is about 3.50 x 1011/m , and the pressure is 9.20 x 10-10 N/m2. What is the temperature there? C 8. [-/1 Points] DETAILS MY NOTES OSCOLPHYS2 13.3. WA.027. ASK YOUR TEACHER PRACTICE ANOTHER The density of gas atoms at a certain location in the space above our planet is about 3.50 x 1011/m], and the pressure is 9.20 x 10-10 N/m?. What is the temperature there? .C Additional Material .Book Submit Answer 9. [-/1 Points] DETAILS MY NOTES OSCOLPHYS2 13.4.P.039. ASK YOUR TEACHER PRACTICE ANOTHER Some incandescent light bulbs are filled with argon gas. What is rms (in m/s) for argon atom temperature is 2100 K? m/s Additional Materials eBook Submit Answer 10. [-/2 Points] DETAILS MY NOTES OSCOLPHYS2 13.4.P.041. ASK YOUR TEACHER PRACTICE ANOTHER (a) What is the average kinetic energy (in J) of hydrogen atoms on the 5500C surface of the sun? (b) What is the average kinetic energy (in J) of helium atoms in a region of the solar corona where the temperature is 6.30 x 105 K? Additional Materials eBook Submit Answer 11. [-/2 Points] DETAILS MY NOTES OSCOLPHYS2 13.4.WA.047. ASK YOUR TEACHER PRACTICE ANOTHER There are two important isotopes of uranium m - 235U and 238; these isotopes are nearly identical chemically but have different atomic masses. Only 235U is very useful in nuclear reactors. One of the techniques for separating them (gas diffusion) is based on the different average sp oride gas, UF. (Use k = 1.38 x 10-23 3/K for this question.) (a) The molecular masses for 235UF, and 238UF, are 349.0 g/mol and 352.0 g/mol, resp ctively. What is the ratio of their average speeds? (Enter your answer to at least 4 decimal places.) 235- V238 (b) At what temperature would their average speeds differ by 1.45 m/s? Additional Materials eBook