HW 10-1

# HW 10-1 - 1(5 How much air(volume at ambient pressure and...

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1. (5) How much air (volume) at ambient pressure and temperature is in the inside of basket ball? 2. (10) You burn 1 gallon of gasoline (assume it is pure octane) in air (assume initially 25% oxygen, 75% nitrogen) at initially ambient conditions. Assume the products have a temperature of 1300K. By how much did the volume increase?

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3. (5) How long would a H 2 , N 2 , CO 2 molecule need to get from UCR to San Francisco moving in a straight line? Assume reasonable outside temperatures and average velocities. Why does it take much longer in reality?
4. (15) Your car engine provides force by means of burning fuel with air in its cylinders. Assume for simplicity that gasoline consists to 50% of benzene and 50% of octane, which in the liquid state occupy no volume compared to gases. Assume further that air consists of 25% oxygen and 75% nitrogen. Assume that fuel injection and combustion occurs in a cylinder, when the air in it is compressed to 5 bar, i.e. the cylinder volume at the compressed state is 1/5 of its maximum volume. Assume that
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## This note was uploaded on 02/03/2011 for the course BIO 5A taught by Professor Zhu/cardullo/rao during the Fall '08 term at UC Riverside.

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HW 10-1 - 1(5 How much air(volume at ambient pressure and...

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