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What volume of 0.200 M HCl must be added to 500.0 mL of 0.250 M NH3 to have a buffer with a pH of 9.00?
1) there is a 621mL sample of O2 at 25 degree C. What is the volume at -25 degree C? 2) there are 5.22L of N2 at 13 degree C. What temperature is needed to expand the gas to 6.22L
tripling the concentration of A increases the rate by a factor of 27, doubling the concentration of B has no effect on the rate, and tripling the concentration of C increases the rate by a factor of 3. Write down the rate law for this reaction.
what is the molarity of a sodium hydroxide solution if 34.85 mL of the soution neutralizes 1.883 grams of pure KHP?
draw the stuuctural formula of your drug C13 H21 NO3 albuterol. Highlight any regions of your drug that are nonpolar
Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form 550 mL of solution.
compute the change in temperature when 1.8 g of sodium chloride is dissolved in 300.0 ml of water initially at 20c. the
The radioactive decay of a certain sample produced 936 disintegrations per minute. Exactly 3.00 days later, the rate of decay was found to be 511 disintegrations per minute. Calculate the half-life, in days, for the decay of this sample.
The Henry's Law constant for carbon dioxide gas in water at 25 oC is 0.031 mol/L-atm. Calculate the solubility of carbon dioxide in water at 25 oC in moles/L if the partial pressure of carbon dioxide in the headspace above a water sample is 1.68 a..
determine how much pv work is done if 80.0 g of c2h4 and 125 grams of hydro chloric acid are permissible to react at
When 0.0190 mol gaseous NH3 and 0.0180 mol gaseous O2 are placed in a 1.00 L container at a certain temperature, the N2 concentration at equilibrium is 2.10×10-3 M. Calculate Keq for the reaction at this temperature.
The enthalpy of vaporization of carbon tetrachloride is +30.0 kJ/mol at its normal boiling temperature of 80.7 K. Calculate the vapor pressure at 100 K
Use the Nernst equation to deter mine the cell potential, Ecell of the voltaic cell consisting of the following redox couples.
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