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If a student mixes 25.0 mL of 0.255 M H2SO4 with 50.0 mL of 0.115 M KOH, which reagent will be in excess? What will the concentration of the of the excess be?
What is the work in kilojoules done during a synthesis of ammonia in which the volume contracts from 7.0 L to 4.3L at a constant external pressure of 47 atm?
the freezing point of the solution is lowered by 5.71 °C. The freezing point and Kf constant for cyclohexane can be found here. Calculate the molar mass of menthol.
What weight of glucose in grammes is required to make 675 ml of a 750 mM solution. Glucose Mr = 180.16
At the begining of the titration being performed in this lab experiement, how do you determine how much naoh should be added at each interval between volume-pH readings? As you approach the equivalence point,
the specific heat of an unknown metal is found to be 0.233 j kg. The law of dulong and petit predicts a molar heat capacity of J/K mol. Use this law to estimate the molar mass of the element.
how do you calcalculate a cube of an unknown metal measures 1.61mm on one side. the mass of the cube is 36mg. which of the following is most likely the unknown metal rhodium, cooper, niobium, vanadium, or zirconium and explain why please.
What is the mole ratio of benzene to n-octane in the vapor above a solution of 20.0% benzene and 80% n-octane by mass at 25C? The vapor pressures of n-octane and benzene at 25 c are 11 torr and 95 torr, respectively
Calculating percent purity from a reaction, One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron is Fe2O3 + CO = Fe + CO2.
What is the internal energy of an ensemble of 1 mole of particles having two non-degenerate electronic energy levels separated by 1000cm^-1 at 1310K.
a 26.0 ml sample of a liquid was found to have a mass of 13.0g. what is the density of the liquid?
What is the maximum wavelength of light capable of removing an electron from a hydrogen atom in the energy states characterized
Calculate the wave-lenght for the following reactions: NO2 dissociating in NO and O2 and NO2 dissociating in N + 2O, given: DeltaHf: NO2
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