Gas a is composed of diatomic molecules (two atoms to a molecule) of a pure element. gas b is composed of monoatomic molecules (one atom to a molecule) of another pure element. gas a has three times the mass of an equal volume of gas b at the same temperature and pressure. how do the atomic masses of elements a and b compare?

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

Madison pushes with a 210-n horizontal force on a 24-kg crate of coffee resting on a warehouse floor. the force of friction on the crate is 74 n. what is the acceleration?

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)