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An electrical heater is used to add 19.00 kJ of heat to a constant-volume calorimeter. The temperature of the calorimeter increases by 5.58°C. When 3.00 g of methanol (CH3OH) is burned in the same calorimeter, the temperature increases by 19.96°C. Calculate the molar heat of combustion for methanol (enter in kJ).
in the reaction a3b---gt2cd the inital rate of dissearance of a is 2.0 molsec. what is the rate of disappearance of b?
The solubility of a gas in H2O at a temperature of 25 °C and a pressure of 1.2 atm is 0.042 M. What will the solubility of the same gas be in H2O at the same temperature at 3.4 atm.
Find the expected freezing point of a water solution that contains 268 g of aluminum nitrate, Al(NO3)3, in 8.50 kg of water.
the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound?
determine whether a precipitate will form from the following reactants and if one does form write the total and net
Use the initial volume of acetic acid, the volume of NaOH required to reach the equivalence point and the value of the molarity of NaOH that you obtained when you standardized this solution against KHP in the strong-acid/strong-base experiment to ..
The enthalpy of activation of a first order reaction is 123kj/mol. The rate constant at 80 C is 1.73x10^-2 s^-1. What is the rate constant at 35 C. (R=8.31 j/mol K)
For some reason, a skier decides to ski from the summit of a mountain near Park City UT (elevation = 9970 ft, T= -10 degrees C, Patm = 623 mmHg) to the base of the mountain (elevation = 6920 ft, T = -5 degrees C, and Patm = 688 mmHg) with a balloo..
A compound composed of only C and F contains 17.39% C by mass. What is the empirical formula?
Justify the Born-Oppenheimer approximation based on vibrational frequencies and the timescale for electron motion.
Calculate the value of ?So in J/K for the combustion of 1 mole of propane to form carbon dioxide and gaseous water. S (C3H8(g)) = 271.3 S (O2(g)) = 203.1 S (CO2(g)) = 212.9 S (H2O(g)) = 188.0
The molar solubility of AgBr in water is 7.31x10^-7 mol dm^-3 at 25C. What is the standard potential of the cell Ag(s)/AgBr(aq)/AgBr(s)/Ag(s) at that temperature
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