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A gaseous compound containing hydrogen and carbon is decomposed and found to contain 85.63% C and 14.37% H by mass. The mass of 258 mL of the gas, measured at STP, is 0.646 g. What is the molecular formula of the compound?
determine what mass of AgCl silver chloride can be formed from 1.03L of a 0.132M solution of AgNO 3 silver nitrate
Determine the actual molar and mass air/fuel ratios.- The molar percentage of water vapor in the exhaust gas before it was dried for this analysis.
A solution of I- gives 301.0 mV in a cell with an iodide ion selective electrode. 10.0 mL of the solution is mixed with 3.00 mL of 1.00 x10^-6 M AgNO3, and the Ag is completely precipitated as AgI. The cell then gives 310.2 mV. Assume the electrod..
A 1.080 g sample of a new organic substance is combusted in the same calorimeter. The temperature of the calorimeter increases from 22.14°C to 26.82°C. What is the heat of combustion per gram of the new substance
a solution of ethanol c2h5oh in water is prepared by dissolving 90.0 ml of ethanol density 0.79 gcm3 in enough water
At 20 degrees C, 0.164 mg of H2 dissolves in 100.0 g of water when the H2 pressure above the water is 1.000 atm. Find the Henry's law constant for H2 is water at 20 degrees C.
What are the solvent and solute in a solution contatining 100 grams of ethanol and 3 grams of sucrose
Calculate the heat evolved in kilojoules by the formation of the solution. Calculate the heat evoled per mole of sulfuric acid. Use n(changeH) = -(mCchangeT)
What can be said about the stoichiometric coefficients of a balanced chemical reaction AND the powers to which the concentrations are raised in the rate-law expression
Mechanism for the conversion of Propanamide to ethanamine. Give an example of Robinson annulation with the mechanism
a proton in a linear accelerator has a broglie wavelength of 128 pm. what is the speed of the proton?
what is the theoretical yield of hydrogen gas when 12.5g of sodium metal reacts with an excess of water while also
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