Popcorn pops because the horny endosperm, a tough, elastic material, resists gas

Chapter 5, Problem 5.138

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Popcorn pops because the horny endosperm, a tough, elastic material, resists gas pressure within the heated kernel until it reaches explosive force. A 0.25-mL kernel has a water content of 1.6% by mass, and the water vapor reaches 1708C and 9.0 atm before the kernel ruptures. Assume that water vapor can occupy 75% of the kernels volume. (a) What is the mass (in g) of the kernel? (b) How many milliliters would this amount of water vapor occupy at 258C and 1.00 atm?

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