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A 2.50 g sample of french fries is placed in a calorimeter with 500.0 g of water at an initial temperature of 21.0 °C. After combustion of the french fries the water has a temperature of 48.0 °C. What is the heat content in kJ/g of the french fries?
Estimate the value of the equilibrium constant at 640 K for each of the following reactions. DELTA Hf and S^o for BrCl (g) is 14.6 kj/mol and 240.0 J/mol*k , respectively. 2NO2(g) double arrows N2O4 (g)
What is the thickness of the foil. the question asks for the thickness of foil in millimeters and also tells that the density is 2.699 g/cm^3.
(the freezing point constant is 1.86 C/m). On the basis of these data, one can conclude that the nonelectrolyte has a molecular weight of?
Precisely 1.00 x 10-3 mol of CaCl2, 0.100 mol of NaOH and 0.100 mol of Na3T were mixed as well as then diluted to 1.00 L. Explain what was the concentration of Ca(2+) in the resulting mixture
Metallic magnesium can be made by the electrolysis of molten MgCl2. What mass of Mg is formed by passing a current of 6.40 A through molten MgCl2 for 4.90 days?
When heated, cyclopropane is converted to propene. Rate constants for this reaction at 470 deg C and 510 deg C are k= 1.10 x 10^-4 and k2=1.02 x 10^-3. Determine the activation energy.
Calculate C (vm) i.e constant molar volume heat and the final pressure of a sample of carbon dioxide that expands reversibly and adiabatically from 57.4 kPa and 1 dm^3 to a final volume of 2 dm^3 . Take gamma(γ)= 1.4
Calculate the percent ionization of formic acid (HCO2H) in a solution that is 0.311 in formic acid and 0.189 M insodium formate (NaHCO2). Ka of formic acid is 1.77*10^-4
a mixture containing only al2o3 fw101.96 and fe2o3 159.69 weighs 2.019 g.when heated under a stream of hydrogen
If solar radiation is 1010 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation.
Compute the mass of Zn(s) necessary to produce 4.4 g of NO(g) when the metal comes into contact with excess nitric acid.
on a beautiful summer day a group of friends have a picnic. of course there is a six pack of beverage on ice for
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