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A 0.65 g sample of fructose (MW = 180. g/mol) is burned in a bomb calorimeter that has a heat capacity of 2.69 kJ/oC. The temperature of the calorimeter increases by 3.80oC. Calculate the molar heat of combustion of fructose using the data from this experiment. Since this experiment is carried out under conditions of constant volume, we are measuring ?E. Your answer should be in kJ/mol and entered to 3 sig. fig.
at 25 C, a sample of NH3(molar mass= 17g/mol) effuses at a rate of .050 mole per min. under the same conditions, which of the fallowing gases effuses at approximately one-half that rate
According to the Bohr model, the allowed energies of the hydrogen atom are given by the equation: E = (-21.7 x 10-19)/n2 J. Which of the following energy levels is not possible in the Bohr hydrogen atom
Assuming that a chemical reactions doubles in rate for each 10 C Temperature increase, by what factor would the rate increase
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 ..
For the reaction 2Na(s) + Cl2(g) -> 2NaCl(g), how many grams of NaCl could be produced from 103.0g molecules of Na and 13.0 of Cl2 (at STP)?
The active ingredient in Antabuse, a drug used for the treatment of chronic alcoholism, is tetraethylthiuram disulfide, C10H20N2S4 (fw = 296.54). The sulfur in a 0.4329 g
which one has the larger standard entropy value at 25C(assume thesame molar amount in the comparison) explain the reason why
to determine the partial pressure of each gas in a mixture of gases using daltons law of partial pressures.1.dry air
Design an experiment to determine the density of irregular shaped object. a. Include an introduction describing the calculations that will need to be made.
consider a solution that is 0.10 m in a weak triprotic acid a triprotic acid is an acid which has three h or hydrogen
For the reaction, A(g) + B(g) => AB(g), the rate is 0.579 mol/L.s when the initial concentrations of both A and B are 2.00 mol/L. If the reaction is first order in A and second order in B, what is the rate when the initial concentration of A = 2.3..
What amount of H2 (in moles) is needed to inflate it to 1.0 atm in an ambient temperature of 25°C at sea level? mol. What mass can the balloon lift at sea level, where the density of air is 1.22 kg m-3? kg
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