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When 9.55 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 23.60 ºC to 47.40 ºC. Assume that the specific heat of the solution is the same as that of pure water. Calculate the ?H in kJ/mol NaOH for the solution process:
NaOH (s) ? Na+ (aq) + OH- (aq)
Write a balanced chemical equation for the combustion of propane gas (C3H8). C3H8 + 5O2 ---> 3CO2 + 4H2O
how do you write two half balanced equations for the following acidic solution MnO4^-(a)+Fe(s)--->Mn^2+(aq) +Fe^2+(aq)
What is the theoretical yield (in grams) of the solid product when 8.02 g of iron(III) nitrate reacts in solution
At 100 ?C the vapor pressures of hexane and octane are 1836 and 354 torr, respectively. A certain liquid mixture of these two compounds has a vapor pressure of 666 torr at 100 ?C. Find the mole fractions in the liquid mixture and in the vapor phas..
A solution of PbI2 has [Pb2+] = 4.5 x 10-5 and [I-] = 6.5 x 10-4. PbI2 has Ksp = 8.7 x 10-9. Write down the reaction that is taking place. Calculate Q.
consider a neuron at rest at 37degc with ion concentrationsinside and outside the cell as at right inside outsidena 10
The rate constant of a first order reaction is 3.46x10 to the -2 at 298K. What is the rate constant at 350K if the activation energy is 50.2 kJ/mol
in ploystyrene beaker , we mixed 30 mL of 0.1 M sodium acetate and 15 mL of 0.1 M hydrocloric acid. we measured the PH it was 4.86
An excess of AgNO3 reacts with 100.0 mL of an AlCl3 solution to give 0.325 g of AgCl. What is the concentration, in mol/L, of the AlCl3 solution
the iron oxide reacts to form water vapor and Fe(s) but the aluminum oxide remains unreacted. if the residue following heating weighs 1.596g, determine the weight percent of iron oxide in the original mixture.
What are the linear and volume flow rates. (b) What is the capacity factor, k', and the partition coefficient, Cs/Cm, for this solute. (c) What fraction of time did the solute spend in the stationary phase
A reaction mixture containing 20 mM O-acetyl serine, 50 mM NaCl, 50 mM HEPES buffer (pH 7.6), and O-acetyl serine acetylase is incubated in 37C until O-acetyl serine is completely hydrolyzed. What is the pH of the mixture at the end of the reactio..
Draw the major organic product of the reaction. Indicate the stereochemistry via wedge/dash bonds, including explicit H and D atoms, at the stereogenic center. Omit byproducts such as salts or methanol.
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