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Naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter. The heat combustion of naphthalene is -40.1kJ/g. When 0.8210g of naphthalene was burned in a calorimeter containing 1,000g of water, a temperature rise of 4.21 degree celcius was observed. What is the heat capacity of the bomb calorimeter excluding the water?
C3H8O3 (density=1.26 g cm-3) is added to a kilogram of water. What is the mole fraction C3H8O3 in the solution?
Rank each of the following measurements from smallest to largest
Calculate the percent yield of benzophenone to triphenylmethyl reaction. started with 4.09g of benzophenone and ended up with .682g triphenylmethyl can anyone help me convert these into moles and calculate the yield
A green leaf has surface area 2.20 cm^2. If solar radiation is 1190 W/(m^2) , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 13.0 oz drink from 74 degree F to 31 degree F
Visualize whats happening at the molecular level and explain how your products wind up in the Hickman's collection well. What would happen if you placed the Hickman above the water condenser?
the vapor pressure of h2o is 42.175 mm hg at 35 degree celsius. the vapor pressure of ethyl alcohol c2h5ohnbsp is 100.5
a gaseous mixture of and contains 38.8 nitrogen by mass. what is the partial pressure of oxygen in the mixture if the
At 20 degrees C, the vapor pressure of ethanol is 45 torr and the vapor pressure of methanol is 92 torr. What is the vapor pressure at 20 degrees C of a solution by mixing 27.0 g of methanol and 75.0 g of ethanol?
Bond energy is the change in enthalpy that accompanies the dissociation of one mole of the bond in the gaseous state.
when most Fe+3 salts are dissolved in dilute nitric acid, the solution is often yellow to orange in color. Why could you not visually detect these colors in the Fe(NO3)3 stock solution?
predict the products of the reaction of acetophenone with 1) NaBH4 then H3O+ 2)aqueous acidic CrO3 3)NH2OH 4)CH3MgBr, then H3O+ 5) CH3OH, H+ catalyst
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