As shown in the figure below, 1.50 moles of H, gas is contained in the left side of a container. The two sides of the container are separated by a valve, and both sides are equal in volume. The right side of the container is initially evacuated. Valve H2 Vacuum (a) The valve is then opened, allowing H, gas to stream into the right side. What is the entropy change of the gas from before the valve opened to after it has filled the entire container? J/K (b) Does the temperature of the gas change? Assume the container is so large that the hydrogen behaves as an ideal gas. The temperature does not change. O The temperature increases. The temperature decreases.

#2. Suppose 2.35 moles of an ideal gas expands to twice its volume isothermally at 298 K. A) How much work is done by the gas? B) Show the work done on a pressure-volume (P-V) graph C) What is the change in entropy of the gas?

. A rigid container (0.066 m3) is filled with an ideal gas (Cv = 2.5R) at 501K and 1.1 bar.  Calculate the entropy changes asked in below. When an axial mixer is installed in a container and 15,000 J of work is applied to the gas under the insulation process, what is the entropy change of the gas?

The principle of increasing entropy Entropy principle: "For all irreversible processes, the change in entropy of the universe is positive." To prove the principle can be taken the case of reversible adibatic process. AS = Sf - Si Prove that the entropy of the universe is positive: E4S 2 0

Which statement regarding entropy is false? A child builds a tower from a pile of blocks. The entropy of the blocks increases. A layer of salt then a layer of pepper are placed in a jar then shaken. The entropy of the salt and pepper increases. Gasoline is burned in a car engine to form exhaust. The entropy of the gasoline increases. A candle burns to heat the surrounding air. The entropy of the candle and surrounding air increases.

H4

On a hot summer day, 2.00 x 10° J of heat transfer into a parked car takes place, increasing its temperature from 35.5°C to 44.4°C. What is the increase in entropy (in J/K) of the car due to this heat transfer alone? J/K Additional Materials CS Scanned with CamScanner O Reading

One mole of an ideal gas is used as the working substance of an engine operating in the cycle shown in the figure below. BC and DA processes are reversible adiabatic.a) Is the gas monoatomic, diatomic or triatomic?b) What is the efficiency and engine?