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A .464 g sample of a metal, M, reacts completely with sulfuric acid according to M+H2SO4 yields MSO4+H2. A Volume of 211 mL of H is collected over water, the water level in the collecting vessel is the same as the outside level. Atm Pressure is 756 Torr and the temp is 25 degree C. Calculate atomic mass of the metal.
Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other has carbon tetrachloride as the solvent. Determine that concentration and boiling point.
Determine how many micrograms of herbicide are present in 10 lb of soil if the herbicide level in the soil in a corn field was observed at 3.0 ppb. ?
the enthalpy of vaporization of ethanol i 43.5 kj/mole at its normal boiling point of 352 k. using avalue of the molar heat capacity of liquid ethanol of 111.46 j/k/mol
A laboratory procedure calls for making 570.0mL of a 1.6M KNO3 solution. How much KNO3 in grams is needed
Using the calibration data provided below, calculate the concentration of cocaine (mg/mL) in the original urine sample.
Propose stepwise sythesis of 2-cholor-4-nitrobenzoic acid starting from benzene
Nitrogen and 20% of Oxygen, and that the pressure at sea level is 1.000 atmosphere, calculate the partial pressures of each gas and the total gas pressure in the middle of the stratosphere at 35.00km altitude, where T=240.0 K.
An organic compound is quite polar and is thus much more soluble in methanol than in pentane (bp 36 degree C). Why would methanol
2,3-dimethyl-2,3-butanediol upon heating in aqueous acid, rearranges to form 3,3-dimethyl-2-butanone. Suggest a mechanism for this
Calculate the pH of a solution formed by mixing 65 mL of 0.30 M NaHCO3 with 75 mL of 0.30 M Na2CO3
Describe the pH of a buffer solution consisting of 100 mL containing 0.1M CH3COOH and 0.125M CH3COO- , both before and after addition of 10 mL of 0.25M HCl. Ka = 1.8 x 10-5.
A buffer (pH 3.70) was prepared by mixing 1.00 mole of formic acid and 1.00 mole of sodium formate to form an aqueous solution with a total volume of 1.00 L.
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