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A solution is prepared by mixing 0.0400 mol CH2Cl2 and 0.0800 mol of CH2Br2 at 25 °C. Assuming the solution is ideal, calculate the composition of the vapor (in terms of mole fractions) at 25 °C. At 25 °C, the vapor pressures of pure CH2Cl2 and pure CH2Br2 are 133 and 11.4 torr, respectively.
in spreading liquid ammonia fertilizer the charges for the amount of ammonia used are based on the time involved plus
Following the instruction for the standardization of sodium hydroxide a student took 3.5 gms of KHP (MWt 204.2g/mol) and titrated the solution formed with the given sodium hydroxide solution.
What is the half-life of a compound if 63 percent of a given sample of the compound decomposes in 72 min? Assume first-order kinetics.
What 2 analytical methods would you use in order to determine (quantitatively/qualitatively) whether of not there is pesticide present in the water sample. Include how you would use these methods in order to determine the contamination/presence
Calculate the wavelength of a photon in nm emitted by a hydrogen atom when its electron drops from the n=5 state to the n=3 state
What is the percentage by mass of CH4 in the mixture. The standard enthalpies of combustion for CH4 and C2H6 are -890.3 kJ mol-1 and -1569.7 kJ mol-1, respectively.
Which element is the central atom, explain how many bonds does the central atom form, is it polar or non-polar, define what the direction of negativity is
What alkene (including cis and trans isomers) would be produced by the dehydration of the following alcohols. Where possible, predict the relative amounts of each product according to Zaitsev's rule.
State the balanced molecular, ionic as well as net ionic equations for the neutralization reaction between NH3(aq) and H2SO4(aq).
The chloride remained in solution because it was soluble. Next, an excess amount of silver nitrate was added, a reaction occurred, and silver chloride was precipitated which was removed from the solution by filtration.
The present maximum allowable concentration in laboratory air during an 8-hr workday is 1 ppb (parts per billion) by volume, which means that there is one mole of Ni(CO)4 for every 109 moles of gas. Assume 23?C and 1.00 atm pressure. What mass of ..
C is unique in its ability to form single , double and triple bonds with another C atom. Predict the structure of the following compounds.
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