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An unknown compound contains only C, H, and O. Combustion of 7.20 g of this compound produced 14.4 g of CO2 and 5.89 g of H2O. What is the emperical Formula of the unknown compound?
The mixture was analyzed spectrophotometrically and found to be 1.84*10^-3 M in I3-. Calculate the molarity of I3- in the original sample
A buffer is prepared by mixing 675 mL of 0.50 M formic acid, HCHO2, and 325 mL of 0.50 M sodium formate, NaCHO2. Calculate the pH.
How many litersof hydrogen gas will be produced by the decomposition of 90 L of water
what concentration of aqueous NaCl solution freezes at -15.2 C? the freezing point of pure water is 0.0 C and Kf of pure water is -1.86 C/m.
what volume will a 300.0 mL sample of gas at STP occupy when the pressure is doubled at constant temperature
Write the balanced net ionic equation for the following reaction in basic solution. Be sure to show phase labels in your final answer
Use the oxidation-number method to balance the following net ionic redox equation.
What is the pH when 100 mL of 0.1 M NH3 is titrated with 50 mL of 0.2 M HCl? pKa of NH4Br is 9.25.
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate, how many grams of solid precipitate will be formed.
Treatment of A with zinc amalgam and HCl affords an optically active, dextrorotatory hydrocarbon C. Identify compounds A, B, and C, including stereochemical configurations. Be sure to explicitly draw H and both wedge/dash bonds at any configuratio..
Determine the molecular weight of a compound given the gas phase data: mass of 11.8 g, temperature of 39.1 C, pressure of 630 torr, volume of 1.31 L.
Calculate the molarity of a solution of glycerol made by dissolving 58.000 mL glycerol at 15 degrees Celcius in enough water to make 390.00 mL of solution.
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