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Find out the amount of (NH4)2 SO4 to be supplied in a fermentation medium where the final cell concentration is 30g/L in a 103L culture volume. Presume that the cells are 12% nitrogen by weight and (NH4)2 SO4 is the only nitrogen source
You have 5 L of an ideal gas at 25 ºC and 5 bar are expanded to a final pressure of 1.00 bar. Assuming Cv=3/2 R, calculate deltaU, deltaH, q, w, and DS if the process is:
Which of the following molecules have the same geometries. A) SF4 and CH4 B) CO2 and H2O C) CO2 and BeH2 D) N2O and NO2
Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m^3 (assume the volume is well mixed throughout). The radon source emits 250 pCi/s
the air in an inflated balloon defined as the system is warmed over a toaster and absorbs 115 j of heat. as it expands
What is the percent yield if 6.25 g S2Cl2 is isolated from the reaction of 10.0 g S8 and 7.50 g Cl2?
How many milliliters of 0.5 M NaOH are needed to exactly neutralize 100 milliliters of 1 M HCl?
a compound contains 87.7% carbon and 14.3% hydrogen.its relative molecular mass is 70.what is the empirical formula and the molecular formula.and is it an alkane or alkene
2.00 g of salicylic acid (molar mass = 138.1 g/mol) reacts with an excess amount of acetic anhydride. A) calculate the theoretical yield of acetylsalicylic acid (molar mass = 180.2 g/mol) for this synthesis.
Describe Alkene Products, When tert-pentyl bromide is treated with 80% ethanol, the amounts of alkene products indicated below are detected on analysis.
the leathal inhalation does of sarin for a 200 pound person has been determined to be .0015mg. determine the ld50 of
After the above reduction is complete, HCl is added to precipitate the crude product. What is the balanced equation showing this reaction. What impurities would be removed from the product upon washing it with ice-cold water
student performed two melting-point determination on a crystalline compound. in one determination the capillary tube contained a sample about 1-2 mm in hight and the melting range was found to be 141-142C
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