In general, real gases behave most ideally at temperatures and pressures.

The behavior of real gases can be described using the van der Waals equation [P + (n2a/V2)](V-nb) = nRT

The values of a and b are given below for the two real gases methane and oxygen.

The gas in which deviations from ideal behavior due to intermolecular forces are expected to be the largest is .

The gas that would be expected to behave most like an ideal gas at high pressures is .

gas a (L2atm/mol2) b (L/mol)

CH4 2.25 4.28×10-2

O2 1.36 3.18×10-2

The answer is 12, for the points

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction