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Common Chemical Hazards
· Assess your local environment, either in your home, town, or region. Describe the type of common chemical hazards that are present in your local environment, similar to those illustrated in the Tox Town interactive. Include any related current events or mitigation strategies that have been proposed.
Under these conditions, what is the depreciation cost during the sixth year of the total life if straight-line depreciation is used?
Use molecular orbital theory to predict whether the bond order in the superoxide ion, O2-, should be higher or lower than the bond order in neutral O2 molecule.Is the bond order of O2- higer or lower than that of O2?
A spherical ball of benzoic acid (diameter = 1.5 cm) is submerged in a pool of still water. The solubility and diffusivity of benzoic acid in water are 0.03 kmol/m3 and 1.25 x 10-9 m2/srespectively.
Calculate the volume of 0.25 M NaI that would be needed to precipitate all the g2+ion from 45 mL of a 0.10 M Hg(NO3)2 solution according to the following reaction:
Calculate the volume of lithium hydroxide at 0.12 M. required to neutralize 25 mL of sulphuric acid at 2.5 M. 3 marks 2. A sample of 2.5 g of solid NaOH will neutralize 125 mL of sulphuric acid. Calculate the molarity of the sulphuric acid. 3 mark..
Sulfuric acid solution 98% by weight is known to have a specific gravity of 1.84. H2S04 concentration declared 98% of the weight of the a.pound H2S04 per ft ^ 3 solution
An effluent disposal contractor is considering entering the recycled field. At present he incinerates an organic waste containing recoverable solvents and dumps the aqueous based effluent containing acids and metals.
An evaporator is used to concentrate 20 wt % NaOH solution entering at 150°F to a 45 wt% NaOH solution exiting at 200°F. What is the pressure in the vapor space of the evaporator
1a / state the formula giving flowrate (qv) in terms of valve flow coefficient, pressure drop across the valve and relative density of fluid. State the units of the variables in the formula.
Implement a traffic light controller FSM with a state encoding where GNS=00, YNS = 01, GEW = 10, and YEW = 11. Show Karnaugh maps for the next state variables and output variables and a gate level schematic for the FSM.
Describe the advantages and disadvantages of using taxes and bounties to regulate negative externalities.
If a wye-delta starting method is employed, find the starting current and the starting torque.
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