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For the synthesis of an insoluble salt such as SrCl2 and Na2SO4, to get SrSO4 explain what are some reasons why percent yield may be greater than 100%? Lower than 100%?
The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 130J of heat. As it expands, it does 76kJ of work. What is the change in internal energy for the system?
nbspa solution is prepared that initially contains 0.10 m agaq and 0.80 m nh3 aq. the kf for the formation of agnh32aq
A buffer solution is prepared by mixing 20.0 mL of 0.032 M benzoic acid C6H5COOH(aq) solution with 25.0 mL of 0.022 M NaC6H5COO(aq). What is the pH of the buffer produced? (Ka of benzoic acid = 6.2x10^-5).
Define the relationships between raoult's law, boiling point elevation, osmotic pressure, freezing point depression, chemical potential, and the kinetic theory
a 738 ml sample of nitrogen n2 was collected by displacement of water at 24c under a total barometric pressure of 1270
write the charge balance for a solution containing H+, OH-, Ca+, HCO3-, Ca(HCO3)+, Ca(OH)+, K+ and ClO4-
A solution is labeled "0.464 M NaClO." What are the following in the solution? Express your concentrations to three significant figures even when only two are valid. Express your pH to two places past the decimal point. Note that the value of Ka f..
Calculate the standard enthalpy of formation of solid diboron trioxide (B2O3) using the following thermochemical information
Calculate the standard enthalpy of formation of methane, CH4 (g), using a C-H bond enthaply of 413 kJ mol-1 and the atomization enthalpies of 716.682 and 217.96 kJ mol-1, respectively for C and H.
the alcohol content of hard liquor is normally given in terms of the proof which is defined as twice the percentage by
describe the components and internal systems that enable the dental porcelain furnace to operate successfully.discuss
a 15.0-g sample of a hydrocarbon is placed in a balloon at 1.00 atm and 25degc and the volume of the balloon is 12.2 l.
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