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A beaker with 130 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.70 mL of a 0.460 it M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
suppose the condenser operates as a total condenser at 40 degrees, the production rate of the overhead product is 75kmol/h. The ratio of reflux and overhead product is 1.5:1.
The standard cell potential (Ecell) of the zinc-air battery is 1.65V. If at 25 degrees celcius the partial pressure of oxygen in the iar diffusing through its cathode is 0.22atm, what is the cell potential (Ecell)? Assume the cell reaction is:
CO(g)+2H2(g)->CH3OH(g) How many moles of each reactant are needed to produce 3.60 X 10^2g of CH3OH?
Order of a reaction, Consider a kinetic study of oxidation of a new plastic stabiliser being proposed for the automobile industry. Stabiliser + H+ + O2 ----> Byproduct
Calculate the mass of Cu(NO3)2·3H2O needed to prepare 50.0mL of a 0.50 M Cu(II) solution?
how many grams of sucrose C12H22O11 must be added to 522g of water to give a solution a vapor pressure 2.0mmHg less than that of pure water at 20 degrees celsius
How much ice(in grams) would have to melt to lower the temperature 352ml of water from 25degrees celcus to 5 degrees celcus? ( assume the density of water is 1.0g/ml)
How many grams of Cu(OH)2 can be produced from the reaction of 0.500g Cu with 30.0 mL of 3.0M NaOH? what is the limiting reagent?
5000 joules of energy are added to 108 grams of silver, Ag, at 20°C. What is the final temperature of the metal? (the specific heat of silver is 0.235)
Write a balanced equation for the combustion of butane gas. If at a given moment butane is reacting at a rate of 0.400 mol L?1s?1, what are the rates of formation of products?
If 200 ml of gas at 400 torr is transferred to a 20.0 ml cotnainer. What will the new pressure be if the temperature is kept constant?
A 325-mL sample of solution contains 25.3 g of CaCl2, which is fully dissolved. Calculate the molar concentration of Cl- in this solution.
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