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When 2.56g of a compound containing only carbon, hydrogen, and oxygen is burned completely, 3.84g of CO2 and 1.05g of h20 are produced. What is the empirical formula of the compound?
Make a rough sketch showing how the following properties of a baseball depend on time, from the moment it is hit high into left field to the time it is caught by the outfielder. You may neglect the effects of friction!
what relative masses of dimethyl amine and dimethyl ammonium chloride do you need to prepare a buffe
Equal volumes of an unknown gas and nitrogen (N2) gas take 5.37 min and 3.55 minutes, respectvely to effuse through a small pin hole. calculate the molar mass in g/mol of the unknown gas
What will be the final concentrations of NH3,N2, and H2 after equilibrium is established. I know the answers are suppose to be H2=.170M, NH3=.0424M, N2=.0568M, but I don't know how to get them.
A sample of chlorine gas is confined in a 2.08-L container at 338 torr and 50.0 degrees C. how many moles of gas are in the sample
Calculate the percent yield for an experiment in which 5.50 g of SOCl2 was obtained in a reaction of 5.80 g of SO2 with excess PCl5
A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10?6m. Could the electron make a transition from the ground state to a higher energy level
What is the most important type of intermolecular attractive force that operate in each
When 5.88 g of CaO (s) is completely dissolved by HBr (aq), how many grams of calcium bromide are formed in solution
What mass of calcium metal could be obtained from one kg of limestone that is 50.0% pure CaCO3?
The transmittance of the mixture was read and compared to a calibration curve which indicated a concentration of I3^- as 5.52*10^-4 M. Calculate the following a.) the molesof I3^- in the mixture
Which weak acid would be best to use when preparing a buffer solution with a pH of 9.70? An acid with Ka = 3.2 × 10^-5 An acid with Ka = 4.0 × 10^-7 An acid with Ka = 1.3 × 10^-11 An acid with Ka = 2.1 × 10^-10
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