Ace - AI Tutor
Ask Our Educators
Textbooks
My Library
Flashcards
Scribe - AI Notes
Notes & Exams
Download App
julio fisher

julio f.

Divider

Questions asked

BEST MATCH

Question 42 of 50 (required) If you wanted to gain insights into the organic search queries that are taking users to your website, which platform should you connect with Analytics? FirebaseSearch Ads 360Search ConsoleGoogle Ads

View Answer
 divider
BEST MATCH

Which of the following is true about the relationship between perceived discrepancy and the experience of stress? Although it was believed for some time that a positive relationship existed between the two, new research indicates that no relationship exists. Efforts at coping are done to reduce perceived discrepancies. When we are stressed, our ability to perceive discrepancies between demands and resources declines severely. Only actual discrepancies, not perceived discrepancies, are related to the experience of stress.

View Answer
 divider
BEST MATCH

19. What is the primary goal of differential reinforcement in behavior reduction?

View Answer
 divider
BEST MATCH

What theoretical approaches are used to understand the impact of fatigue and wear on mechanical system reliability?

View Answer
 divider
BEST MATCH

2. (18 pts) You have data for several different sterilization protocols that have been used to sterilize a 20,000 L bioreactor. Below are the data collected. Temp C Time Del factor 121 30 20 119 45 24 117 60 26 a. Assuming you have a 20,000 liter bioreactor with a known contamination level of 2500 microbes/L in a vegetative state. What will be the final bioburden after running each protocol? b. Calculate the k value for each process given the assumption the contaminant is a different organism in each. c. Determine the D value for each process above using your answer for part (b).

View Answer
 divider
BEST MATCH

A) 1 moles \( \mathrm{O}_{2} \) B) 0.5 moles \( \mathrm{O}_{2} \) C) 2 moles \( \mathrm{O}_{2} \) D) 4 moles \( \mathrm{O}_{2} \) E) none of the above 52) How many grams of aluminum oxide are produced according to the reaction below given that you start with 10.0 grams of \( \mathrm{Al} \) and 19.0 grams of \( \mathrm{O}_{2} \) ? Reaction: \( 4 \mathrm{Al}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{Al}_{2} \mathrm{O}_{3} \) A) 5.00 B) 18.9 C) 40.4 D) 0.185 E) not enough information logroms of Al \[ \begin{aligned} \text { r } 19.0 \text { grams of od } \end{aligned} \] 0.594 moles 53) A \( 24.0 \mathrm{~g} \) sample of nitrogen gas reacts with an excess of hydrogen gas to give an actual yield of \( 3.85 \mathrm{~g} \) \( \mathrm{NH}_{3} \). What is the percent yield for this reaction? Reaction: \( \mathrm{N}_{2}(\mathrm{~g})+3 \mathrm{H}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{NH}_{3}(\mathrm{~g}) \)

View Answer
 divider
BEST MATCH

Prove that $\int_0^{\infty} \frac{\sin x}{x} dx = \frac{\pi}{2}$. [Hint: Start with the fact that the integral of $D_N(\theta)$ equals $2\pi$, and note that the difference $(1/\sin(\theta/2)) - 2/\theta$ is continuous on $[-\pi, \pi]$. Apply the Riemann-Lebesgue lemma.]

View Answer
 divider
BEST MATCH

Use Python or MATLAB to solve this problem, please. 3. Antoine constants for hexane and heptane are (Psat in mmHg, T in C): A B 6.91058 1189.64 C 226.28 Tmin -30 Tmax 170 Hexane N-heptane 6.89677 1264.9 216.544 -2 123 (Recommended: do a hand calculation of Psat to be sure you understand the proper use of log and T, e.g. check against the normal boiling point. This calculation does not need to be submitted.) Determine the bubble temperature and vapor composition of a mixture that is 30 mol% hexane at 750 mmHg. Document your calculations. 4. Repeat calculations across the composition range at intervals of 0.1 at 750 mmHg. Summarize the calculated values in a table. There is no need to document these calculations by hand since they are sufficiently clear that you can use them for reading values in subsequent problems. Submit your plots. 5. Calculate the relative volatility (hexane/heptane at hexane mole fractions of 0, 0.5, 1 for 750 mmHg. (You may be able to use results already calculated in problem 4.) Also, calculate the geometric mean a=ao using the relative volatility at the two composition end points indicated as 0 and 1. Comment on the comparison of the geometric mean with the value found at 0.5. Using the mean relative volatility and the simplified equation given in the notes, estimate the value. Copy your plot from problem 4 and add a line for the assumption of constant a. Include a legend. Comment on the accuracy of the approximation for this mixture compared to the more detailed Raoult's law calculation. 6. Copy the y-x figure from problem 4. For a flash at the conditions z=0.6 and a L/F=0.7, add the q-line to your plot (drawing is recommended instead of computing the line so that you understand how to place the line using x or y intercepts). Enlarge the plot sufficiently so that you have confidence in the precision of your g line. Mark the point clearly that determines the compositions leaving the flash drum. What value of x and y would result for a flash at this condition (within 2 mol%)? 7. Return to the T-xy plot from problem 4. Read off the temperature that corresponds to this flash condition of problem 6. Document your resulting temperature. Calculate the K-ratios at this temperature using vapor pressures. Using the Rachford-Rice equations for x and y, calculate the values for hexane and compare with the values found graphically in problem 6.

View Answer
 divider
BEST MATCH

3. A liquid boils at temperatures of 121°C under a pressure of 1 atmosphere, and at 325°C under a pressure of 5 atmospheres. Calculate (i) the molar enthalpy of vaporization (ΔHm,vap) for this liquid, and (ii) the pressure at which the boiling point temperature is 200°C. Ideal Gas Constant, R = 0.08206 L atm K-1 mol-1 = 8.314 J K-1 mol-1; Boltzmann constant, kB = 1.3807x10-23 J K-1; Avogadro’s Number, NA = 6.022x1023 mol-1; 1 atmosphere = 1.013x105 Pascals; 1 m3 = 103 L; 1 L = 103 cm3; atomic weight: C = 12 gm/mol; H = 1 gm/mol

View Answer
 divider
BEST MATCH

Use \triangle ABC to answer the questions that follow. (Not to scale) C(4,14) A(2,3) B(15,5) Q A) Write an equation of the line through C parallel to \overline{AB}. y= error syntax error: your equation should have expressions on both sides, syntax B) Write an equation of the perpendicular bisector of \overline{AB}. y = -6.5x + 59.25 C) Write an equation of the altitude from C to \overline{AB}. D) Write an equation of the median from C to \overline{AB}. E) Find the slope of the line passing through the midpoints of \overline{AC} and \overline{BC}. \text{Slope} = \frac{2}{13}

View Answer
 divider