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Problem- A gas at a temperature of 85 degrees C occupies a volume of 175 mL. Assuming constant pressure, determine the volume at 15 degrees C
I want you to elucidate the chemistry in this above problem.
The resulting solution is titrated to a starch endpoint with 34.81 mL of the thiosulfate solution. Calculate the concentration of the thiosulfate solution.
Question- Is a high rate trickling filter(as described below) operating within typical BOD and Hydraulic loading rates if the flow rate of the wastewater after primary treatment is 100,000 GPD and the BOD is 100 mg/L. The trickling filter is compr..
An element has three naturally occurring isotopes, calculate the percent abundance and the atomic mass
Its volume is 2.0 x 10^2 mL and its pressure is 750 torr. what is the molar mass?
suppose you chose phenolphthalein , which changes color at the end point from colorness(acidic) to pink at pH8.5 .Would you need the same , more or less volume of NaOH in the back-titration?
The heat of formation of Al2O3(s) is change Hf= -1669kJ/ /mol. a.) Calculate the heat evolved when 3.47 g of Al burns in oxygen. b.) Find the mass in grams of Al that burns when 1039 kJ are evolved.
a steel tank with a volume of 9.583L contains N2 gas under a pressure of 4.972 atm at 31.8C Calculate the number of moles of N2 in the tank.
Calculate the theoretical yield of 1M of potassium chromate (50 ml) and Lead (II) nitrate 1 mol (50ml)
For some reason, a skier decides to ski from the summit of a mountain near Park City UT (elevation = 9970 ft, T= -10 degrees C, Patm = 623 mmHg) to the base of the mountain (elevation = 6920 ft, T = -5 degrees C, and Patm = 688 mmHg) with a balloo..
Formic acid (HCO2H, Ka=1.8X10^-4) is the principal component in the venom of stinging ants. What is the molarity of a formic acid solution if 25.00 mL of the formic acid solution requires 29.80 mL of 0.0567 M NaOH to reach the equivalence point
Determine the total number of valence electrons in each of the following: a) COCl2; b) N2O; c) ClO2^-; d) SeCl2; e) PBr3
How many ATP molecules are produced by energy generated when electrons flow from NADH to oxygen (O2)
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