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Calculate the pH of an KOH solution if 56.4 mL of KOH soultion is titrated with a 0.875 M HCl and it took 15.6 mL of the HCl to reach the equivalence point.
Octane ratings are assigned to gasoline mixtures based on their ability to prevent knocking relative to isooctane. Estimate the energy released during the combustion of 1.00 mol of pure isooctane.
Reversible adiabatic processes are isentropic. Are isentropic processes necessarily reversible and adiabatic?
what is the partial pressure of argon? If the two flasksare connected through a stopcock and the stopcock is opened, whatis the total pressure?
Consider a mixture is a 2 dm^3 flask at 27 degree C. For each of the following mixtures, calculate the partial pressure of each gas, the total pressure, and the compositon of the mixture in mole percent. (Hint: for mole percent take your answer fo..
A buret containing NaOH solution has an initial reading of 0.14ml. 25.00ml of 0.1000M HCl is titrated to a phenolphthalein end point,
A pound of coffee beans yields 54 cups of coffee (4 cups = 1qt ). How many milliliters of coffee can be obtained from 1g of coffee beans?
What is the pH of the solution if [OH-] of an ammonia solution is 1.0 X 10-2M?
draw the structures for all the products obtained from the Diels - alders reaction of 2 methyl 1,3 butadiene and propene
Aqueous solutions of 30% (by weight) hydrogen peroxide, H2O2, are used to oxidize metals or organic molecules in chemicals reactions. Given that the density of the solution is 1.11 g/mL, calculate the molality, molarity, and mole fraction.
A given PH meter can be read with a standard deviation of +- PH units throughout the range 2 to 12 calculate the standard deviation of [H3O+] at each end of this range
A helium gas cylinder at 25 Celcius is used to fill balloons and has a total volume of 43.8 L and a pressure of 1.51 x 10^4 kPa. how many moles of helium are in the tank
Which compounds in problem are isomers? a)2-methylpropane b)2,4-dimethylpentane c)2,2-dimethylpentane d)4-ethyl-2-methylhexane e)2,3-dichloro-4-t-butylheptane f)4-ethyl-7-isopropyl-2,4,8-trimethyldecane g)4-isobutyl-3,4-dimethyl-5-sec-butyloctane..
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