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a.You use a properly calibrated explosimeter to measure the flammable hazard inside a tank that contained toluene and may still have some residual product a. inside. Your readings show that the atmosphere inside the tank is twenty percent (20%) of the lower explosive limit (=LEL). Assume uniform mixing within the tank for the sake of this problem and assume the explosimeter is calibrated for toluene and that toluene is the only substance present. What is the concentration of toluene in the atmosphere inside the tank?
b. What is the concentration of toluene in the tank, expressed in parts per million? _________ppm and is this greater than or less than the OSHA time weighted average (TWA) exposure limit ______ (for an 8-hour time weighted average is: _____ppm)
The valve between these Tanks X and Y is opened and the gases are permissible to mix. After the gases have had time to mix, calculate the partial pressure of the oxygen gas?
Acetic acid flowing at the rate of 20kg pe min. Product p is of combination leaves at rate of 100 kg per minute. Determine the composition of p?
If a nonvolatile, yellow crystalline solid sample of 0.351 g is dissolved in benzene (C 6 H 6 ) of 15.8 g formed a solution. this solution freezes at the temperature of 4.77 degree celsius.
A mass of 57 g of lead fishing weight absorbs heat of 146 Calories. Determine its final temperature If its initial temperature =48 Centigrade,?
A gas originally occupies 20L at 24.7 psia and 5 C. What would the pressure be if the volume changed to 4.77ft3 and the temperature was 82 F? Give the answer in atmospheres.
If a sample of sodium is dropped into a container of water the reaction is:
Design a qualitative analysis scheme
Write down the product for the reaction; Butane (forward and backward reaction)in the presence of Aluminium bromide and HBr at the temperature of 27 degree celcius/
Determine how many moles of CO 2 would have to be combined at constant temperature and volume to increase the amount of CO to 0.300 moles?
Determine the molarity of a solution of twenty grams of Ammonium bromide, NH4Br, in enough water to produce 132 mL of solution?
Calculate the numbers of moles of 2-butanol that needed to dissolved in ethenol(125gms) just to form 12 m 2 butanol soln also find out mass of 2-butanol ?
Explain the structure for 4-ethyl-2,3-dimethyl-2-heptene?
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