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At 400 Celcius, Kc = 2.9 x 10^4 for the reaction HCHO2(g) <-->CO(g) + H2O (g) A mixture was prepared with the following initial concentrations: [CO] =0.20M, [H2O] = 0.30 M. No formic acid, HCHO2, was initially present. What was the equilibrium concentration of HCHO2?
How reliable is the perfect gas law in comparison with the van der Waals equation? Calculate the difference in pressure of 10.00g of CO2 confined to a volume of 100cm3 at 25 degrees Celsius between treating it as a perfect gas and a van der Waals ..
magnesium sulphate MgSO4 has an observed osmotic pressure =7.6 atm at the temperature of twenty five degree celsius. Determine the observed van't Hoff factor?
If a solution is made by mixing 20.0 mL 0.3 M NaCH3COO with 30 mL 0.4 M CH3COOH, calculate the pH of the solution? For acetic acid, K = 1.76 x 10-5.
A green leaf has a surface area of 2.10 cm^2. If solar radiation is 1150 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.
What is the percentage yield of SO3 if 22.3 g SO3 are obtained from the reaction of 25.0 g SO2 with an excess of O2.
A sample of ethanol (C2H5OH) has a mass of 43.8 g.(a) How many carbon atoms does the sample contain?
If the density of the solution is 1.1094 g/mL, what is the molarity of the sulfuric acid?
A mixture of three gases, A, B, and C, is at a total pressure of 9.38 atm. The partial pressure of gas A is 1.88 atm and that of gas B is 2.32 atm. What is the partial pressure of gas C?
If 30.0 grams of sulfuric acide react with 25.0 g of aluminum hydroxide, identify the limiting reactant.
Calculate the mass percent of a solution that is prepared by adding 35.9 gram of NaOH to 30.2 g of H2O.
In dilute solution the carbonyl absorption band of II occurs at 1702/cm. Explain this observation. stretching vibration in carboxylic acids is heavily mixed
A solution of ethanol (C2H6O) in water is sometimes used as s disinfectant. 1.00 L of this solution contains 553 g or ethanol and 335 g of water. What is the mole fraction of ethanol in this solution.
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