 # Two moles of molecular hydrogen (H 2 ) react with 1 mole of molecular oxygen (O 2 ) to produce 2 moles of water (H 2 O) together with an energy release of 241.8 y/mole of water. Suppose a spherical vessel of radius 0.500 m contains 14.4 moles of H 2 and 7.2 moles of O 2 at 20.0°C. (a) What is the initial pressure in the vessel? (b) What is the initial internal energy of the gas? (c) Suppose a spark ignites the mixture and the gases burn completely into water vapor. How much energy is produced? (d) Find the temperature and pressure of the steam, assuming it’s an ideal gas. (e) Find the mass of steam and then calculate the steam’s density. (f) If a small hole were put in the sphere, what would be the initial exhaust velocity of the exhausted steam if spewed out into a vacuum? (Use Bernoulli’s equation.) ### College Physics

11th Edition
Raymond A. Serway + 1 other
Publisher: Cengage Learning
ISBN: 9781305952300 ### College Physics

11th Edition
Raymond A. Serway + 1 other
Publisher: Cengage Learning
ISBN: 9781305952300

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Chapter 12, Problem 72AP
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