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1. If the face opening for a laboratory hood installation is to be 2 feet high and 5 feet wide, what volumetric flow rate is required to generate a face velocity of 100 ft/min?a. 2000 ft3/minb. 500 ft3/minc. 1000 ft3/mind. 10000 ft3/min
2. The volume of air flowing through a 2 foot by 2 foot duct with a velocity of 150 fpm is:a. 300 fpmb. 300 cfmc. 600 cfmd. 150 cfme. 600 fpm
3. Given that the molecular weight of Toluene is 92.1, what is the equivalent value for a measure value of 150 ppm?a. 565 mg/m3b. 40 mg/m3c. 150 mg/m3d. 75 mg/m3e. 300 mg/m3
4. Calculate the eight hour TWA for the following asbestos exposure results collected on one individual during a shift:- 2 hours at 0.05 f/cc- 2 hours at 0.10 f/cc- 30 minutes at 0.30 f/cc- 30 minutes lunch outside the work area - no sampling- 3 hours at 0.02 f/cc
a. 0.51 f/ccb. 0.068 f/ccc. 0.064 f/ccd. 0.38 f/cce. None of the above - it can not be determined from the available information
Acetone of at least 95 mol% purity is wanted, and the aqueous effluent must not contain more than 1 mol% acetone. The feed will be a saturated liquid. Estimate the number of ideal stages required.
Give the conclusions drawn form thermodynamics for single reactions.The following conclusions may be drawn from thethermodynamics;?The thermodynamic equilibrium constant is unaffected by the pressure of the system, by the presenceor absence ofiner..
using the concept of a mass balance describe how environmental engineers and scientists model the carbon cycle in the
Large blooms of algae result from high nutrient loading in rivers and lakes, for example, as a result of runoff of fertilizers from agricultural fields.
When algae growing in water containing only 16O were furnished carbon dioxide containing 18O, no 18O was found to be evolved from the oxygen gas produced. What conclusions about photosynthesis can be drawn from these experiments?
List the types of separator that could be considered for. Bearing in mind the nature of the process, what type of separator would you recommend for this duty?separating the solids from the liquid
Two separate metal blocks of thickness d and 2d are kept at constant temperature T0 at the top anda constant heat flux q0 is provided at the bottom. Draw the steady state temperature profile for eachof the blocks.
Isophthalic acid (IPA, formula HOOC-C6H4-COOH) is made by oxidation of m-xylene with air. The reaction is carried out in acetic acid solvent at about 200 °C using a cobalt-manganese catalyst promoted by bromine.
Demonstrate Comprehension Level of Learning for preparation and submission of documents according to a specified form.
A rigid container has water of 2 kg at 120 C with a quality of 25%. The container is heated to the temperature of 140 Celsius, calculate the new quality?
Calculate the work done in breaking up a drop of petrol of volume 1 cm3 into 109 drops. Surface tension of petrol is given as 26 dynes/cm.
Under these conditions, name one crystalline defect that you would expect to form in order to maintain charge neutrality. How many Cu+ ions are required for the creation of each defect? How would you express the chemical formula for this nonstoichiom..
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