Should the victory of the communists in the Chinese civil war in 1949 be judged as a failure of American foreign policy? Why or why not?
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Two fair dice are rolled. Let X represent the number on the first die, and let Y represent the number on the second die. Find 
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The mass of the Earth’s troposphere, the lower part of the atmosphere, is approximately 4.4 x 1018 kg.
a. Use the ideal gas law to estimate volume of the troposphere in cubic meters at standard state (P = 1 atm, T = 298 K, R = 0.0821 atm-L/mol-K ). Note, the average molecular weight of air is 28.967 grams/mole.
b. The average mass of water in the troposphere is 1.3 x 
Using your answer from above, calculate the concentration of water vapor in the troposphere in mg/
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c. Using your answer from part b, what would be the concentration of water vapor in the troposphere in 
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The initial temperature and pressure of 8000 cm3 of air are 300°C and 800 kPa, respectively. The necessary heat transfer, if the volume does not change and the final pressure is 200 kPa, is nearest:
A) ?12 kJ B) ?22 kJ C) ?32 kJ D) ?42 kJ
List three careers that are applications of agricultural mechanics
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