A thermometer has a time constant of 10 s and behaves as a first-order system. It is initially at a temperature 30°C and then suddenly subjected to a surrounding temperature of 200°C. Calculate the 90 percent rise time and the time to attain 99 percent of the steady-state temperature. Repeat these calculations for a time constant of 5 s and compare the results with that of the previous case.

A thermometer has a time constant of 10 s and behaves as a first-order system. It is initially at a temperature 30°C and then suddenly subjected to a surrounding temperature of 200°C. Calculate the 90 percent rise time and the time to attain 99 percent of the steady-state temperature. Repeat these calculations for a time constant of 5 s and compare the results with that of the previous case.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

A solution of the antibiotic, penicillin contains 300 units/mL. If it is eliminated from plasma through a first order linear process and has a half-life of 8 days in the plasma, what will be the concentration in 7 days? (5 points - Solution, 1 point - Answer)
At 0°C and 1 bar, a monolayer of CO adsorbed on 1 g of Fe/Al2O3 catalyst occupies a volume of 4.25 cm3. What is the area of the catalyst? The area per adsorbed particle is 0.165 nm2. Give your answer in m2.
What does it mean whrn the result of this pseudo first order is negative? And why? Was r² = 0.903 is a good fit?
In a batch reactor, reactant A is steadily converted into product B. The initialconcentration of reactant A is 100 mg/L. During a 10-hour reaction course, it wasobserved that the concentration of A in the reactor decreased at a constant rate of 10mg/L per hour. Based on the result, you can determine that the transformation reactionA→B follows ( ) with respect to reactant A.
An article in Solid State Technology, "Orthogonal Design of Process Optimization and Its Application to Plasma Etching" by G.Z. Yin and D.W. Jillie (May, 1987) describes an experiment to determine the effect of C2F6 flow rate on the uniformity of the etch on a silicon wafer used in integrated circuit manufacturing. Data for two flow rates are as follows: C2F6 Uniformity Observation (SCCM) 1 2 3 4 5 6 125 2.7 4.6 2.6 3.0 3.2 3.8 200 4.6 3.4 2.9 3.5 4.1 5.1 C2F6 Uniformity Observation (SCCM) 1 2 3 4 5 6 125 2.7 4.6 2.6 3.0 3.2 3.8 200 4.6 3.4 2.9 3.5 4.1 5.1 (a) Does the C2F6 flow rate affect average etch uniformity? Use = 0.05. (b) What is the P-value for the test in part (a)?
The following gas-phase reaction takes place in a closed, constant-volume batch reactor at isothermal (constant temperature) conditions. 2CO+O2→2CO2 Initially, the reactor contains 0.564 kmol of CO, 1 kmol of O2, 1 kmol of CO2, and 0.5 kmol of N2 at a total pressure of 5 atm. Assuming ideal gas behavior, what is the reactor pressure (in atm) when the reaction goes to completion?
3. At 273 K and 105 Pa, the value of n for He is 1.88 x 10-5 Pa s. Calculate ii. The collision diameter. ii. The diffusion coefficient.
Referring to a continuous stirred tank reactor (CSTR), determine the reactor volume required to process 1,200 L/min of 6 M reactant A in a reaction of A → B given a conversion of 90%. The reaction rate constant, k = 2.0 min-1.
The reaction A → R+S with rate -rA = k (0th order) occurs in a batch reactor that operates under isothermal and isobaric conditions (assume that g = 1). The initial reaction mixture contains reactant A only. The half-life of the reaction (i.e., CA = CA0/2) is t1/2 = 10 min. Calculate the time required for the reaction to be completed (i.e., CA = 0). 2. %3D
The following table contains melting temperature (K) and self-diffusion activation energy data for several metals that have the FCC crystal structure. Melting Temperature (K) Activation Energy (kJ/mol) Metal Lead (Pb) 600 107 Aluminum (Al) 933 144 Copper (Cu) 1358 200 Iron (Fe) 1811 284 Nickel (Ni) 1728 285 Make a plot of activation energy versus melting temperature and draw a best-fit line through the data points. Using this plot estimate the self-diffusion activation energy for silver. self-diffusion activation energy = 310.86 kJ/mol
Predict the general characteristics (strength, elasticity, crystallinity, chemicalreactivity) of a polymer based on its structure, and explain how its physicalcharacteristics change as it is heated past Tg and Tm.
Time gibbs energy variation of 1.0 dm3 benzene when the pressure on the increases from 1.0 atm up to 100 atm.