Estimate the time needed for a glycine molecule  to diffuse a distance of 27 μmμm in water at 20 ∘C∘C if its concentration varies over that distance from 1.16 mol/m3mol/m3 to 0.40 mol/m3mol/m3 Compare this "speed" to its rms (thermal) speed. The molecular mass of glycine is about 75

A krypton-84 atom has a mass of 1.39 x 10-25 kg. (a) What temperature (in K) would a gas composed entirely of krypton-84 atoms have to be at in order for the rms speed of the atoms to equal the escape speed from Earth, 1.12 x 10 m/s? K (b) What temperature (in K) would a gas composed entirely of krypton-84 atoms have to be at in order for the rms speed of the atoms to equal the escape speed from the Moon, 2.37 x 10 m/s? K

An argon-40 atom has a mass of 6.64 ✕ 10−26 kg. (a) What temperature (in K) would a gas composed entirely of argon-40 atoms have to be at in order for the rms speed of the atoms to equal the escape speed from Earth, 1.12 ✕ 104 m/s?  K (b) What temperature (in K) would a gas composed entirely of argon-40 atoms have to be at in order for the rms speed of the atoms to equal the escape speed from the Moon, 2.37 ✕ 103 m/s?  K

Determine how many times per second each molecule moving with rms speed would move back and forth across a 6.4 mm -long room on the average, assuming it made very few collisions with other molecules.To find vx use the equation v2=v2x+v2y+v2z and the fact that molecules have no preferred direction.   vrms= 473 m/s

A research group recently made an interesting discovery, while studying laser interactions with molecular gases. They found that nitrous oxide molecules (mass 44.013 g per mole) can reach temperatures exceeding 1,648 degrees Celsius after a interacting with a few closely-spaced (in time) laser pulses. At this temperature, what is the rms speed (in m/s) of a nitrous oxide molecule?

At what temperature (in Kelvin) will the diffusion coefficient for the diffusion of species A in metal B have a value of 5.92 × 10-16 m2/s, assuming values of 2.8 x 10-6 m?/s and 225,000 J/mol for Do and Qd, respectively? i K

What are the rms speeds of neon atoms at 1960 ∘C? in m/s   What are the rms speeds of oxygen molecules at 1960 ∘C in m/s

.5 moles of Neon gas at 210C has a volume of 0.935 m3. Without changing the pressure, the volume is change to 0.784 m3. (a) What is the average root mean square velocity of a molecule after the change? (b) What is the total kinetic energy of the gas? (MWNe = 20.18 u)