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A reaction of great significant for undergraduate students is the fermentation of sugar with yeast. This is a zero order (in sugar) reaction, where the yeast is a catalyst (it does not enter into the reaction itself). If a 0.5 liter bottle contains 3 grams of sugar, and it takes 20 minutes to convert 40% of the sugar what is the rate constant?
A well water has the following mineral contents in mg/L: Na+=20; K+=35; Ca+2 =15; Mg+2 =10; Sr=0.5; Cl- =40; HCO3- =65; CO3-2=5; SO4-2=15; and NO3=10.
Is it possible to have a copper-silver alloy of composition 50 wt% Ag-50 wt% Cu that at equilibrium, consists of α and β phases having mass fractions Wα = 0.60 and Wβ=0.40
Ethylene diamine tetra-acetic acid (EDTA) is a water-soluble compound that readily combines with metals, such as calcium, magnesium, and iron. The molecular formula for EDTA is C10N2O8H16. Assume one EDTA molecule complexes (associates with) one m..
The air pressure is 120 KPa, the air temperatuer is 28 degrees C, and the dew point is 20 degrees C. Calculate the corresponding vapor pressure (ea) and relative humidity (RH). Assume Atmospheric pressure is 101,000 Pa.
Determine the bulk modulus of elasticity (in N/m^2) of a liquid that has a 1.10 percent volume decrease because of an increase in pressure from 1,000 N / cm^2 to 11,000 N / cm^2.
Determine the slenderness ratio of a 5 m column with built in ends if its cross- section is (a) circular with a radius of 40mm and (b) 50 mm square. Use the concept of effective length.
Assume you are an observer standing at a point on the track for a period of 30 minutes and are recording the instantaneous speed of each vehicle as it crosses your point. What is the time-mean speed and space-mean speed for these vehicle
Assume you are observing traffic in a single lane of a highway at a specific location. you measure the average headway and average spacing of passing vehicles as 3 seconds and 150 ft, respectively. calculate the flow, average speed, and density of..
An in-compressible fluid flows horizontally in the x-y plane with a velocity given by u = 33 (y/h)^1/2 , where y and h are in meters and h is a constant. Determine the average velocity for the portion of the flow between y = 0 and y =h.
Calculate the minimum velocity of flow in ft/sec and m/sec of water at 160 degrees F in a 2 in. dia pipe for which the flow is turbulent
The vertical velocity of the box at the time that it hits the surface is v= 5m/s. After impact the camera experiences an acceleration of a = -kx, where k is a constant and x is the compression of the packing material.
A laboratory consolidation test was performed on a clayey soil specimen, which was drained on both top and bottom. The time for 50% consolidation was 6.2 minutes, and the specimen's thickness at 50% consolidation was 0.740 in.
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