Modern vacuum pumps make it easy to attain pressures of the order of 10-13 atm in the a pressure org.Do x 10 wim and an ordinary temperature of 300.0 K, how How many molecules would be present at the same temperature but at 1.00 atm Let compare this lab to astrophysical example, the Lagoon Nebula. The Lagoon ight-years from the earth. The cloud is about 45 light-years in diameter and glow by the stars that lie within the nebula ) . The cloud is also very thin; there are only molecules per cubic centimeter. Find the 7-9 XIC Nebula. Compare it to the laboratory pressure in part (@). starships being buffeted by turbulence as buta pays clouds such as the Why or why not? Use I atm - 1.013 x 105 Pa, 1 cm = 1.00 x 10% me. PV =ART 9x10 # x 1x10 0 = nx 2. 314x 300 9 vi20- 2 494.21 1 = 3.67/523 1 X10 * 17 106_ n x 3.314X300 13 10= 2494.21 1= 4x/95 Man = 4 x/ 3 x 6.0:24/0' = 2. 4x10" V A player bounces a basketball on the floor, compressing it to 80.0%% of its original originally at 20.0 C and 2.00 atm 10 atm. The ball's inside diameter is 23.9 cm. = 9. 2. 3jm b. What temperature does the air in the ball reach at its maximum compressi Assume the compression te mainbatic and original slate and its maximum compression ? R- 8.3145 Kom of . I atm = 1.013 x 105 Pa, OC - 273.15 K "a) Ce Ly = 20.16 = 741.23/ kg. Cp = C+R= 20.71-18 314=25674 1= = 30ON = 1.4 / 16) (273.15+ 20) X 1"44 283 IT = 320.52k AV. = 3 X13 - 3 X Xx/( 235 )' = 7. 14x10 13 One third of a mole of He gas is taken along the path abc shown in the figure. Assume a. Along path abe, how much beat is transferred into of out of the gas? time, bow mich best would be transferred me after calorie the horizontal do C. How does Q in part (b) compare with Q in part (a)? Explain. a ) X9. 314 = 72.2:19 7C- 1 X10 X10/ =314:5k = 3 420.76x (72 2-3be ) of 0903 9501 a805 are 9010 V(m') -24/.1'] . What is the thermal efficiency of an engine through the cycle 1 - 2 -+ 3 - 4 as shown 2po -- he prend the heat Q and work W for each step in T. = P.W=T 7: = ( V. = 27 74: 16% = 27 Qw anp aT = TART Q34 =- h(v07 = ART Q41 = - MERAT = MERT 13 and writerof evening you fill a pint-sized (0.474 1, - 4.74 x 10"m') plastic cup with ice crime wischer cooler. forget about it , and go to bed . The air in the kitchen is going ned at a constant 22.2"C by the central heating system of your apartment. When you wake up a. What is the entrers charge ? the ice water during the proc b. What is the entropy change of the air in the room due to the heat that flows from it c. What is the total entropy change of the air-ice water system due to the he got entropy change positive or negative of the ice water? Is the total The latent heat of fusion for water is 3.33 x 1054. The heat capacity of liquid water is 4190 -. (assumed to be constant) The heat capacity of ice is 2108 - (assumed to be constant) The density of ice at OC: Place - 920 The density of liquid water a OFC: ow = 100 ( ) the = five Vice = box 4 x 4. 74x10 = 0. /0902/] muster = Parker Vuster = (010 x 7 X 4. YING * = 0. 35315 = (32. 23J 132-/152 = 2347 CamScanner