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A certain reaction A ? products is second order in A. If this reaction is 10.% complete after 20. s, how long would it take for the reaction to be 90.% complete
determine the mass of unknown liquid that you transferred to the flask before heating in the determinig the molar mass of a volatile liquid by the dumas method expermant
At a birthday pool party, the temperature is 29.5C and the atmospheric pressure is 765.4mmHg. One of the decoration hellium balloons has a volume of 6.25L. what would be the volume of the balloon if it were submerged in a swimming pool to a depth ..
The heat of fusion of ice (the heat associated with ice melting) is 6.0 . Find the temperature of the coffee after the ice melts.
Set up the problem by listing the reactions unknowns equations and knowns b.) Calculate the concentrations of all chemical species present in the solution, and the pH.
Estimate the molecular weight of a polymer if a 100.-mL solution of 6.5 g of the polymer in toluene has an osmotic pressure of 0.044 atm at 27°C.
warmed then 125 microliters of unknown xylene and 10 mg detergent were refluxed for 45 minutes. Then we added sodium bisulfite until the purple color was gone for one step. What is the role of sodium bisulfite in such a procedure?
When solutions containing silver and chloride ions are mixed, silver chloride precipitates: Ag+ (aq) plus Cl- (aq) ---> AgCl(s)
water and titrated with 0.0633 M NaOH. After 10.0 mL of base has been added, the pH was determined to be 5.07. What is the Ka for the acid?
How many mL of 0.25 m NaOH solution are required and What is a standard soluyion in an acid-base titration
what wind flow rate entering the canyon would produce a pollutant concentration greater than 0.0025 gmol/ft^3 in the air coming out of the canyon?
Say your a facility manager at a powerplant and your preparing for an interview with a news media reporter concerning environmental hazards at your facility
The oxidation half and the reduction half of a voltaic cell are made of the same electrodes and the same electrolyte. The concentration of electrolyte is different in each compartment.
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