Concept explainers
(a)
Interpretation:
Draw a calibration curve of mass flow rate versus rotameter reading. Use it to estimate the mass flow rate of a water stream with the rotameter reading of 5.3
Concept introduction:
A calibration curve was prepared in order to use a rotameter. A calibration technique was to calibrate the rotameter. The observed results are as follows,
Rotameter Reading | Collection Time (min) | Volume collected (cm3) |
2 | 1 | 297 |
2 | 1 | 301 |
4 | 1 | 454 |
4 | 1 | 448 |
6 | 0.5 | 300 |
6 | 0.5 | 298 |
8 | 0.5 | 371 |
8 | 0.5 | 377 |
10 | 0.5 | 440 |
10 | 0.5 | 453 |
So, we can draw the calibration curve using above data.
(b)
Interpretation:
For a measured flow rate of 610 g/min, calculate the 95% confidence limits on the true flow rate.
Concept introduction:
The mean difference between duplicates (
Furthermore, confidence limits on measured values can be calculated using the mean difference between duplicates.
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
- A circular lake of diameter 2.5m is receiving wastewater with a flow rate of 25 L/sec from a village has phosphorus concentration of 0.5 mg/L. The lake receives Phosphorus point source concentration of 0.8 g/sec. If the wastewater is completely mixed in the pond and removes phosphorus with a removal rate of 12 m/year, find the concentration of phosphorus (mg/L) in effluent water stream? Assume steady state. (Round-off to one decimal place).arrow_forward1) 1500 kg mixture contains 15% acetone, 75% water and 10% Acetic acid by weight. a) Calculate the total mole of mixture and molar fractions of each compound. b) Calculate Average Molecular Weight of mixture. c) 2 kmol more Acetic acid is added to the mixture. What would be the mass fractions of this new mixture? (MW: Acetone= 58 g/mol Water= 18 g/mol Acetic acid= 60 g/mol)arrow_forwardCalculate the pressure at the base of a mercury column 400 mm high. The mercury density at room temperature is 13.5951 g / cm3.Express the result in column, atmosphere, psi, pascal, and bar units. Calculate the pressure exerted on the drum skin of a diver located at a depth of 20 feet below sea level. Assume that the seawater density is: 1 gr / cm3. Calculate the molar volume of Cu2Te. Express this volume in mol/liter and mol/cm 3 units. ( rm=7.270 g/cm3) Use the ideal gas law and the van der Waals equation to calculate the pressure of ammonia gas at a temperature. T = 300 K the molar volume is V = 24 liters / molarrow_forward
- O 15 Ppm 2. In a certain polluted area, the partial pressure of NO gas was 8 pascal. The mixing ratio of NO is . ppmv (assume normal conditions) 3. A 500 kg sample of a fertilizer containing 115 ppms Cu was mixed with 15,000 kg soil which also contains 2.0 ppms Cu. The final level of Cu is ........ pPpms 4. The mixing ratio of H,S gas is 0.2 ppmv and the total flux into atmosphere is 2.5x10" kg Estimate r for H;S. ....kg (assume normal conditions and volume of atmosphere 4.0x10" m)arrow_forwardA drug is infused continuously intravenously (IV) for treatment of a particular disease. The volume of the body fluid V = 16 liters. The drug is excreted (removed) through the kidneys at rate ke, proportional to the concentration of the drug in the body fluids. The drug is ineffective and not used by the body if its concentration is below Cmin and becomes poisonous if the concentration goes over Cmax. It is metabolized at a rate km as the concentration is 2Cmin- Let the parameter values Cmin = 4 mg/I, Cmax =40 mg/I, ke = 0.2/hr and km = 0.3/hr. a. How much is the maximum possible rate of infusion of the drug? b. How long the drug would continue to be effective if the infusion has been stopped as the concentration reached at the maximum level?arrow_forward10:40 AM Fri Mar 3 Virtual Lab Expt. #3 Density and Specific Gravity 3. Density of metal rounds (steel) The mass in gram of three metal round (steel) provided is measured one at a time and data entered in Table 3, under column 2, Replications #1, #2, #3, respectively. Overflow-cup with a drain-nozzle is placed on a bench above the water sink and filled with water until excess water flows out through the nozzle and levels off. After the excess water stops dripping out of the overflow-cup, an empty beaker is held under the nozzle with one hand and the metal round, of which mass entered in Rep #1, is gently dropped in the water with the other hand; the metal will displace a fraction of the water and water flows out through the nozzle into the beaker. The content of the beaker is then poured into a small, graduated cylinder, and the volume is measured in ml and data recorded under volume of metal column. The experiment described for Rep #1 is repeated in the same manner for metal rounds 2,…arrow_forward
- A drug is infused continuously intravenously (IV) for treatment of a particular disease. The volume of the body fluid V = 16 liters. The drug is excreted (removed) through the kidneys at rate ke , proportional to the concentration of the drug in the body fluids. The drug is ineffective and not used by the body if its concentration is below Cmin and becomes poisonous if the concentration goes over Cmax . It is metabolized at a rate km as the concentration is >=Cmin. Let the parameter values Cmin= 4 mg/l, Cmax =40 mg/l, ke = 0.2/hr and km = 0.3/hr.a. How much is the maximum possible rate of infusion of the drug?b. How long the drug would continue to be effective if the infusion has been stopped as the concentration reached at the maximum level?arrow_forwardb) Coal-fired power plants emit airborne particulate matter to the atmosphere known as fly ash. Summarise the mechanism of fly ash collection from the flue gas stream by an electrostatic precipitator (ESP).arrow_forwardmaining Time: 20 minutes, 37 seconds. uestion Completion Status: > A Moving to another question will save this response. uestion 8 A gas occupies 235 mL at 26°C and a pressure of 724 mm Hg. The temperature decreases to 18°C and the pressure drops to 709 mm Hg. What is the final volume of the gas? O 234 ml O 231 ml O 1386 mL O 428 ml. O 2126 mL A Moving to another question will save this response. MacBook Air DII DD F2 F3 F4 F5 F6 F7 F8 @ 23 $ * 2 3 4 7 8. W R Y S D F G J K C V N M つ エ B く○arrow_forward
- What is the mole fraction of magnesium nitrate, Mg(NO3)2, in an aqueous solution that is 5.549 wt % in magnesium nitrate? MW(Mg(NO3)2) = 148.315 g/mol. 5.834e-2 1.721e-1 7.080e-3 9.929e-1arrow_forwardConvert kPa/sec to uL/min for the following values. -0.0019 kPa/sec -0.0029 kPa/sec -0.0028 kPa/sec -0.0021 kPa/sec -0.0026 kPa/sec -0.0034 kPa/secarrow_forward4. A new dam has been built with a reservoir capacity of 1,000,000 AF when full. The river flowing into the reservoir has a flowrate of 3200 cfs. While the reservoir is filling, there must be releases of water downstream from the dam of 1,600 AF/d for irrigation; 5,000 gpm for powerplant cooling; and 10 mgd for a city. How many days will it take to fill? daysarrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY