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- “Diffusion” sounds slow—and over everyday distances it is—but on the scale of a cell it is very fast. The average instantaneous velocity of a particle in solution—that is, the velocity between its very frequent collisions—isv = (kT/m)½where k = 1.38 × 10–16 g cm2/K sec2, T = temperature in K (37°C is 310 K), and m = mass in g/molecule.Calculate the instantaneous velocity of a water molecule (molecular mass = 18 daltons), a glucose molecule (molecular mass = 180 daltons), and a myoglobin molecule (molecular mass = 15,000 daltons) at 37°C. Just for fun, convert these numbers into kilometers/hour. Before you do any calculations, you might try to guess whether the molecules are moving at a slow crawl (<1 km/hr), an easy walk (5 km/hr), or a record-setting sprint (40 km/hr)Your spaceship has docked at a space station above Mars. The temperature inside the space station is a carefully controlled 24 ∘C at a pressure of 745 mmHg. A balloon with a volume of 437 mL drifts into the airlock where the temperature is −95 ∘C and the pressure is 0.115 atm. What is the final volume, in milliliters, of the balloon if n does not change and the balloon is very elastic?Determine the average speed of an air particle at 15 oC. The mass of one air particle is about 4.81*10^-26 kg.
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- Q1/ If H = U + PV, find the relations between G and FH.A 3m^3 cylindrical tank contains nitrogen gas at 1500kPa and 37C. After some of this gas was used, the pressure and temperature fall to 1260kPa and 28 C. What is the percentage in mass of the nitrogen gas used?The gauge pressure in your car tires is 2.50x10^5 n/m^2 at a temperature of 35.0 C when you drive it onto a ferry boat to Alaska What is their gauge pressure later, when their temperature has dropped to -40.0 C? Write your answer in atm and your answer must have three significant figures 26.62 1.62 15.62 0.52
- The molecules in a six-particle gas have velocities V₁ = (20î - 30ĵ) m/s v2 = (40î +90ĵ) m/s V3 v3 = (-802 +20ĵ) m/s V4 = 30î m/s v5 (402 403) m/s v₁ = (-50 î – 40ĵ) m/s = Calculate Vavg. Express the x and y components of the velocity in meters per second separated by a comma. Ur avg, Uy avg Submit Part B VE ΑΣΦ Request Answer Calculate Vavg. Express your answer with the appropriate units. ? m/sThe volume of an automobile tire is 2.5 × 10−2m3 . the pressure of the air in the tire is 3.3 atm and the temperature is 17C ◦ . what is is the mass of air in grams ? The mean molecular mass of air is 29g. 1 atm = 1.01 × 105 Pa ; Calculate to 2 decimals.For the reaction below the partial pressure of NO₂ is 0.25 atm and the partial pressure of N₂O₄ is 1.0 atm. What is the Q of the reaction? 2 NO₂ (g) ⇌ N₂O₄ (g) Kp = 0.25