The temperature of a copper bar with a diameter of 50 mm and a length of 1 m is increased by 95°c. The increase in volume is 9 513 mm3. Calculate the density of oxygen is 1.42kg/m3 at standard temperature and pressure (STP).
Calculate the density of oxygen of 30°C and a pressure of 9×10 square 4 PA. The gas constant of oxygen is 261.311 j/kg. K