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A sample of an ideal gas has a volume of 3.35 L at 14.40C and 1.50 atm. What is the volume of the gas at 21.60C and 0.987 atm?
In biological and medical applications, it is often necessary to study the autoionization of water at 37 degrees centigrade instead of 25 degrees centigrade. given that Kw for water is 2.5 X 10^-14 at 37 degrees centigrade, calculate the pH of pur..
What is the rate law for step 2 of this reaction? Express your answer in standard MasteringChemistry notation. For example, if the rate law is type k*[A]*[C]^3.
calculate the mass of a sample of copper that occupies 4.2* 10^-3 cm^3 if the density of gold is 8.94 g/cm^3.
If 26.23mL of potassium permanganate solution is required to titrate 1.041g of ferrous ammonium sulfate hexahydrate, FeSO4(NH4)SO46H2O.
Determine the molarity of a solution prepared by dissolving 4.50 mol of NH4Cl in sufficient water to make 2.00 L of solution.
required to reach the first equivalence point of a solution of citric acid (H3C6 H5O7), how many ml of NaOH are required to completely neutralize this solution
What is the change in energy, Delta E, in kilojoules per mole of hydrogen atoms for an electron transition from n=8 to n=2? Express your answer in kilojoules per mole to three significant figures.
what is the mole fraction of ethanol, C2H5OH, in an aqueous solution in which the ethanol concentration
What is the initial concentration (in M) when 19 mL of a iron(III) chloride solution was diluted with 18.5 mL of solvent to a final concentration of 0.576 M? Assume the volumes are additive.
Calculate the initial I- concentration in a solution containing 3.0mL of 0.20 M KI, 5.0 mL of 0.15 M (NH4)2S2O8, 5.0 mL of 0.25M (NH4)2SO4,
Two beakers containings different buffer solutions of lactic acid/lactate (CH3CHOHCO2H/CH3CHOHCO2- or LacH/Lac-) and quinhydrone are prepared.
a photon has a wave lenght of 501 nm . calculate the energy of the photon in joules . enter your answer in scientific notation
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