At what temperature would the average speed of helium atoms equal (a) the escape speed from the Earth, 1.12 × 104 m/s, and (b) the escape speed from the Moon, 2.37 × 103 m/s? Note: The mass of a helium atom is 6.64 × 10-27 kg.

The most probable speed for molecules of a gas at 296 K is 263 m/s. What is the molar mass of the gas? (You might like to figure out what the gas is likely to be.)

If all the gas particles are in a state of moving toward each other and causing a collision, then the calculated velocity is... A. The most possible speedB. Average speedC. Mean square root velocityD. Relative speedE. Speed squared

RTI The molecules in a six-particle gas have velocities ₁ (201-30j) m/s V2 (10i+60j) m/s 73=(-501 +20j) m/s 7= 30i m/s Vs (40i-40j) m/s ₁=(-50 i 10j) m/s Calculate Varg Express the x and y components of the velocity in meters per second separated by a comma. Uz avg, Uy avg Submit Part B VD|| ΑΣΦ Request Answer W Calculate Davg- Express your answer with the appropriate units. ? m/s

The temperature of 6.00 moles of argon gas is lowered from 2.70  102 K to 1.90  102 K. (a) Find the change in the internal energy, ΔU, of the gas. J(b) Find the change in the average kinetic energy per atom. J

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The rms speed of a certain sample of ammonia molecules, with a molecular weight of 17 g/mol, is 328 m/s. What is the rms speed of carbon monoxide molecules, with a molecular weight of 28 g/mol, at the same temperature?

A moonshiner makes the error of filling a glass jar to the brim and capping it tightly. The moonshine expands more than the glass when it warms up, in such a way that the volume increases by 0.5% (that is, ΔV/V0 = 5  10-3) relative to the space available.

Two moles of a helium gas are at a temperature of 260 K. Calculate the average kinetic energy per atom, the root-mean-square (rms) speed of atoms in the gas, and the internal energy of the gas. HINT (a) the average kinetic energy per atom (in J)  J (b) the root-mean-square (rms) speed (in m/s) of atoms in the gas  m/s (c) the internal energy of the gas (in J)  J

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