Thank u A tank of compressed air of volume 1.00 m^3 is pressurized to 20.8 atm at T= 273 K. A valve is opened, and air is released until the pressure in the tank is 15.3 atm. How many molecules were released? Boltzmann constant is 1.38 × 10-23 J/k.

Problem 2: The specific internal energy and specific volume of liquid water at a temperature of 20.0°C and a pressure of 20.0 MPa are 82.77 kJ/kg and 0.0009928 m³/kg, respectively. Determine the specific enthalpy of the water under these conditions Water u=82.77 kJ/kg v=0.0009928 m³/kg T=20.0°C p=20.0 MPa h=?

A tank contains 10.6 g of chlorine gas (Cl₂) at a temperature of 84 °C and an absolute pressure of 6.00 × 105 Pa. The mass per mole of Cl2 is 70.9 g/mol. (a) Determine the volume of the tank. (b) Later, the temperature of the tank has dropped to 32 °C and, due to a leak, the pressure has dropped to 3.00 × 105 Pa. How many grams of chlorine gas have leaked out of the tank? (a) Number i (b) Number Units Units

A sealed  29.0-m3 tank is filled with  2,474 moles of oxygen gas (O2) at an initial temperature of 270 K. The gas is heated to a final temperature of  487 K. The ATOMIC mass of oxygen is 16.0 g/mol, and the ideal gas constant is R = 8.314 J/mol · K = 8.314 J/mol · K. The final pressure of the gas in kiloPascals is closest to