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One mole of n-butane in a piston-cylinder assembly undergoes an irreversible isothermal expansion against a constant external pressure until the forces balance. The initial pressure is 10 bar, and the initial molar volume is 3 3 1023 m3/mol, and the final volume is 0.05 m3/mol. Take the temperature of the surroundings to be 298 K. Use the van der Waals equation of state and
(a) What is the initial temperature?
(b) What is the final pressure?
(c) How much work is done during this process?
(d) How much heat is transferred this process?
(e) What is the entropy change of the universe for this process?
a researcher wishes to estimate the percentage of adults who support abolishing the penny. what size sample should be
The number of false alarms a building fire alarm system registers has a Poisson distribution with a mean of 6 false alarms per year. The variance of the number of false alarms is what?
Given that both balls selected are white what is the probability that bowl 3 was selected?
A survey was completed to estimate the proportion of residents in support of constructing a new football stadium, at tax payer expense, to accommodate an NFL team in the LA area.
If an employee is selected for promotion, find the probability that the employee will be under 25 or a female. Express your answer as a fraction in lowest terms.
The store manager is under impression that his sales people do more business if they score higher on the social skills test which was administered this year. 5 victims were selected at random. Below, the results are X =test score, Y =weekly sales ..
1. it was stated in the background that 63 of all us hispanics are mexican american. suppose 850 us hispanics are
The average weight of the sample is 10.2 g, and the standard deviation of weight among mice is 2 g. Find a 95% confidence interval for the mean weight of all the mice in the shipment.
Find the confidence interval by estimating the population proportion
A manufacturer of nickel-hydrogen batteries randomly selects 100 nickel plates for test cells, cycles them a specified number of times, and determines that 14 of the plates have blistered.
Even though both X and M are unbiased, the reason we usually use the mean instead of the median as the estimator of μ is that X has a smaller variance than M.]
a wet compression refrigeration cycle uses hfc-134a as the working fluid and operates between 75 f and 8 f. use a mass
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