You may have noticed that latex helium balloons tend to shrink rather quickly; a balloon filled with air lasts a lot longer. Balloons shrink because gas diffuses out of them. The rate of diffusion is faster for smaller particles and for particles of higher speed. Diffusion is also faster when there is a large difference in concentration between two sides of a membrane. Given these facts, explain why an air-filled balloon lasts longer than a helium balloon.

Q: The most probable speed of the molecules in a gas at temperature T2 is equal to the rms speed of the…

A: The most probable speed of the molecules in a gas at temperature T2 is equal to the RMS speed of the…

Q: A container with volume 0.05 m contains of a mixture of helium and argon gas in equilibrium at…

A: At normal temperature, the molecules are randomly moving in an ideal gas. The velocities of the…

Q: the pressure of the gas is halved (at constant temperature and number of moles), the volume of the…

A: since the temperature is constant, it is evident that it is a case of an isothermal process  for…

Q: For a substance with a diffusion coefficient (D) of 1 x 10E-5 cm2.s-1, what is the diffusion time…

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Q: If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, and a…

A: P = 1.2 atm = 1.2 atm ×101.3 kPa1 atm =121.56 kPa V = 31 L T = 87 0C = 87 + 273 = 360 K R = 8.31…

Q: What is the average velocity of the air molecules in the room?

A: The motion of molecules present at room temperature is random.

Q: A mercury thermometer has a glass bulb of interior volume 0.10 cm3. The capillary tube above the…

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Q: An ideal gas occupies a volume of 1.6 cm3 at 20°C and atmospheric pressure. Determine the number o

A: Given:-  The volume of the gas V=1.6 cm3 Temperature of the gas T= 20o C = 20+ 273.15 = 293.15 K…

Q: Do you anticipate that the diffusion constant will increaseas the temperature of a liquid increases…

A: Introduction: Diffusion constant is a physical constant called diffusivity. It depicts how fast can…

Q: You have 1.0 kg of aluminum and 1.0 kg of lead. Which one has: (a) A higher number of moles? (b) A…

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Q: 14) If a solute diffuses through water an average distance of 2cm in 2hours, what is its diffusion…

A: As you have asked for question 14 only therefore I am solving that question only. Given : x = 2 cm =…

Q: 1) As the cork begins to move, what happens to the air inside the bottle? (Select all that apply.)…

A: The Cork begins to move

Q: molecules, with a molar mass of 2.016 g/mol, in a certain gas have an rms speed of 385 m/s. -What…

A: Given  Vrms = 385 m/s  Molar mass = 2.016 g/mol = 2.016 ×10-3 kg/mol

Q: If the pressure of the gas is doubled (at constant temperature and number of moles), the volume of…

A: The ideal gas equation is given as, Here, Pressure denoted as P, Volume denoted as V, Temperature…

Q: Gas is contained in a 5.00-L vessel at a temperature of 22.0°C and a pressure of 6.50 atm. (a)…

A: Suppose a gas having volume(V) in Litre at a temperature,(T) in kelvin at pressure (P) in Atmosphere…

Q: In the lungs the respiratory membrane separates tiny sacs of air (pressure 1.00*10^5 Pa) from the…

A: To solve this question we will consider that the alveoli is spherical in shape. According to ideal…

Q: The diffusion constant for a substance in water has a value of 1.66 x10−9 m2/s. In a 5.3 cm long…

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Q: A container with volume 0.05 m² contains of a mixture of helium and argon gas in equilibrium at…

A:

Q: Suppose you are in a room that is at a temperature of 262.09K.  What is the approximate RMS velocity…

A: RMS or root mean square velocity is the square root of the sum of the squares of the velocities for…

Q: A container with volume 0.05 m³ contains of a mixture of helium and argon gas in equilibrium at…

A: Given:  Temperature of the system = 180o = 453.15 K P = 4π(M2πRT)32 ν2e-Mν22RTdν

Q: If the temperature and volume of an ideal gas in a container are both doubled, then the pressure (a)…

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Q: Oxygen diffuses across the membranes that separate the air in the alveoli in the lungs from the…

A: Equation for diffusion time is,  t=x22D Where, t is diffusion time, and x is thickness and D is…

Q: ou can smell perfume very shortly after opening the bottle. To show that it is not reaching your…

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Q: How long will it take glucose molecules (in days) to diffuse an average distance of 30mm in water at…

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Q: Choose: A- if statement I is TRUE, but statement II is FALSE B- if statement I is FALSE, but…

A: Standard Temperature and Pressure (STP) is defined as 0 degrees Celsius and 1 atmosphere of…

Q: There are 1.5 times as many molecules as Avogadro's number at a temperature of 1.7°C inside a sealed…

A: Given No. Of molecules of gas N' = 1.5 NA where NA  = Avagadro no. Temperature of gasT = 1.7° C =…

Q: Suppose that an ideal gas in a sealed metal container (so it has a fixed volume) has its temperature…

A: ideal gas in sealed container volume is fixed that is volume =constant ideal gas equation is  PV=nRT…

Q: In the figure, container A holds an ideal gas at a pressure of 4.26 x 105 Pa and a temperature of…

A: We need to find the final common pressure of the two given containers.

Q: Suppose that an ideal gas in a sealed metal container (so it has a fixed volume) has its temperature…

A:

Q: diver 50 m deep in 10∘C fresh water exhales a 1.5 cm diameter bubble. What is the bubble's diameter…

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Q: In the lungs, the respiratory membrane separates tiny sacs of air (pressure 1.00x10°Pa) from the…

A:

Q: The mean free path is the average distance traveled by a particle between collisions with other…

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Q: A closed, rigid container with a given mass of helium gas is heated until the temperature is…

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Q: Suppose a 2.5 g oxygen gas is in a 4 L container. Assume the diameter of oxygen is 3.55 Angstroms.…

A: Mass of oxygen in container m = 2.5 g = 2.5 x 10-3 kg VVolume of container V = 4 L = 4 x 10-3 m…

Q: A container with volume 0.2 m' contains of 2.5 moles of oxygen gas. Given that the molar mass of…

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Q: Oxygen reaches the veinless cornea of the eye by diffusing through its tear layer, which is 0.48-mm…

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Q: You can smell perfume very shortly after opening the bottle. To show that it is not reaching your…

A: The average distance travelled by the molecule is xrms=2Dt

Q: At what temperature (in Kelvin) will the diffusion coefficient for the diffusion of species A in…

A:

Q: A hot air balloon uses the principle of buoyancy to create lift. By making the air inside the…

A: Let m be the mass of the air inside the balloon.

Q: In the figure, container A holds an ideal gas at a pressure of 4.26 x 105 Pa and a temperature of…

A:

Q: The difference between the root-mean-square speed and the most probable speed of helium molecules…

A: Given  values:

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.