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A certain first order reaction A->B while performed at 25 degree C is 25% complete after 42 min. Explain what is the rate constant of this reaction?
What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius
Solid benzoic acid, C6H5COOH(s), is often used to determine the heat capacity of a bomb calorimeter, because the constant volume heat of combustion of this compound is known with high precision
A pair of enantiomers is named below. For each stereoisomer, draw the structure. Be sure to specify the stereochemistry via wedge-and-dash bonds.
the specific heat of compound a is 0.50 calg degrees celsius. what amount of heat has been added to 100.0 g of compound
Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 rm J/(g cdot {^circ C}) and 1.00 rm g/mL] and that no heat is lost to the calorimeter itself, nor to the surroundings.
If in the reaction: A(g) + 2B(g) 3C(g), initially 1.80 mol of A, 4.20 mol of B and 1.00 mol of C are placed in a 2.00 liter container and analysis shows 4.50 mol of B at equilibrium, what is the equilibrium constant for the reaction
A geological sample is found to have a Pb-206/U-238 mass ratio of 0.773/1.00. Assuming there was no Pb-206 present when the sample was formed, how old is it? The half-life of U-238 is 4.5 × 109 years.
The decomposition of SO3 to SO2 and O2 , 24 Kcal/mole of heat is absorbed by the system.
In the laboratory a student combines 25.5 mL of a 0.203 M sodium nitrate solution with 24.3 mL of a 0.375 M manganese(II) nitrate solution.
Calculate the distances NH3 gas and HCl gas would travel in this experiment if a 100.0-cm tube were used, based on the accepted molar masses for the two gases
what is the functionpurpose of the bromthymol blue in the co2
question an iron meteorite was analyzed for isotopic argon content. the amount of 36ar was 0.200mm3 stpper kg of
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