Jill takes in 0.0270 mol of air in a single breath. The air is taken in at 20.0°C and exhaled at 35.0°C. A) How much heat leaves her body in a single breath due to the temperature increase of the air? Ignore the humidification of the air in the lungs and treat air as an ideal diatomic gas. Universal gas constant is 8.314 J/mol·K. in j B) Her respiration rate is 14 breaths per minute. At what average rate does heat leave her body due to the temperature increase of the air?  in W

A canister with a piston contains 1.05 kg of air at 30.0°C and 1.25 x 105 Pa. Energy is transferred by heat into the system as it expands and the pressure rises to 4.25 x 105 Pa. Throughout the expansion, the relationship between pressure and volume is given by P = cv1/2) where C is a constant. Air may be modeled as a diatomic ideal gas with a molar mass of M = 28.9 g/mol. Determine the following. (a) initial volume (in m3) 0.01477 The ideal gas law may be used to describe the air in any state, Since we want the initial volume, we should use the pressure and temperature for the initial state. How can you determine the number of moles of air from the total mass and the molar mass? m3 (b) final volume (in m) m3 (c) final temperature (in K) K (d) work done on the air (in J) (e) energy transferred by heat (Enter the magnitude in MJ.) MJ

10. A container with a movable piston holds 2.00 moles of a monatomic ideal gas at a pressure of 3.0 × 105 N/m2 in a volume of 0.018 m3 . (a) What is the temperature of the gas? (b) The gas undergoes an isothermal expansion to a volume of 0.027 m3 . How much work does the gas do during this expansion? (c) How much heat flows into or out of the gas during this expansion? Does it flow into or out of the gas?

An Expanding Monatomic Gas We start with 5.00 moles of an ideal monatomic gas with an initial temperature of 134 °C. The gas expands and, in the process, absorbs an amount of heat equal to 1280 J and does an amount of work Part A equal to 2000J. What is the final temperature Tfinal of the gas? Use R = 8.3145 J/(mol · K) for the ideal gas constant. View Available Hint(s) ΠΥΠ ΑΣφ ? Trinal °C Submit Request Answer