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You have a material (not unlike water) whose molar specific heat C, at atmospheric pressure is 30J/(mole K) in the gaseous phase, 75 J/(mole K) in the liquid phase, and 35 J/(mole K) in the solid phase. Furthermore, the material condenses at 373 K with a latent heat of 41 000 J/mole and freezes at 273 K with a latent heat of 6000 J/mole. Assuming that it behaves as an ideal gas at 600 K, find
(a) its enthalpy at 600 K,
(b) its molar enthalpy at 500 K, 374 K, 372 K, 323 K, 274 K, 272 K, and 200 K.
(At constant pressure, ΔH = ΔE + pΔV = ΔQ, so you don't have to worry about changes in volume at phase transitions.)
Test against the null hypothesis of a one sided alternative that the difference is more than 10 minutes. Use a .1 level of significance (alpha).
While many of these neoconservatives will probably go on to be financially successful, they are robbing themselves of the true purpose of collegiate academics.
(a) Interpret the slope of the fitted regression Sales = 842 - 37.5 Price. (b) If Price = 20, what is the prediction for Sales? (c) Would the intercept be meaningful if this regression represents DVD sales at Blockbuster?
A recent article in Vitality magazine reported that the mean amount of leisure time per week for American men is 40.0 hours. You believe this figure is too large and decide to conduct your own test.
Is there sufficient evidence at the 0.05 level of significance to conclude that the proportion of women physicians at the university health system exceeds 27.9%?
A p-value of 0.82 obtained for a particular hypothesis test would indicate strong evidence that the null hypothesis is true. Discuss.
A researcher conducts a one-sample z test and makes the decision to reject the null hypothesis. Another researcher selects a larger sample from the same.
Given this information, for what time setting should the production manager set the automatic timer that pauses the production line while each cabinet dries?
Suppose that you take a random sample of 65 people in that city, what is the probability that 9.5 % or more of the 65 have more than two jobs?
Do the data demonstrate that the true mean photometer reading for the color density is significantly different from 12 at 3 percent level of significance?
Imagine rolling a red die and a blue die. From this trial, name a pair of independent events.
the probability of successfully rehabilitating a convicted criminal in a penal institution is 0.40 . a random sample of
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