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Explain A pressurized tank of helium gas initially at 7.2bar and 40 C is cooled until the pressure reaches 5bar. Explain what is the final temperature of the gas?
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?
Draw the tetrahedral representation of the S enantiomer of the amino acid alanine, CH3CH(NH2)CO2H.
If 4 liters per minute of 100 ppm 1,1,2-trichloroethane solution is to be reduced by 99% in a diffused air CSTR, what air flow is required if equilibrium is assumed. What air flow is needed for 90% removal.
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places
Compute the morality of the excess reagent in 8.0mL of 0.10M FeCl3 in 0.02M HCl + 4.0mL of 0.010M K4[Fe(CN)6].
What is the buffer-component ratio, [Pr - ]/[HPr], of a propanoate buffer that has a pH of 5.57 (Ka of HPr = 1.3 multiplied by 10-5)
sodium oxide were obtained from a reaction of 4.598 g of sodium metal with excess oxygen gas what is the % yield of sodium oxide?
If 2.44 moles of Helium gas has a pressure of 2.4 atm at 343 K, what volume must the gas occupy.
What product(s) are formed when you react Benzoyl Chloride with 4- Ethylaniline. Include any byproducts.
A compound A (C22H27NO) is insoluble in acid and base but reacts with concentrated aqueous HCl and heat to give a clear aqueous solution from which, on cooling, benzoic acid precipitates.
Carbon dioxide is removed from the atmosphere of space capsules by reaction with a solid metal hydroxide. Theproducts are water and the metal carbonate
If 22 mL of 7.0 M H2SO4 was spilled, explain what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid
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