Final masses of benzoic acid and sodium chloride
A very small amount of benzoic acid may not have precipitated but rather may have remained in the sodium chloride solution and passed through the filter paper. How would this affect the final masses of benzoic acid and sodium chloride?
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Calculate the mass loss on heating 1.200 g of a NaHCO3-NaCl mixture containing 65% NaCl
calculate the activation energy for diffusion for a system where the diffusion coefficient doubles its value from 700k to 1200k. R=8.314J/molk. Answer
Write the mathematical expression for the equilibrium constant, Keq, as a function of the concentrations of the products and reactants for this reaction
A square metal plate is heated to 80 C at the corner corresponding to x=y=1. The temperature distribution in the plate is described by 80e-(x-1)^2e-3(y-1)^2 obtain the surface and contour plots for the temperature.
Calculate the equilibrium concentration of {rm H_2} in a reaction mixture obtained by heating 6.75 {rm mol} of steam and an excess of solid carbon in a 7.44 {rm L} container.
A modulation constellation is given by S = {c(k + jl) | k = 3, 1, 1, 3 and l = 3, 1, 1, 3 and j = square root of -1, where c is a constant. Determine the value of c to ensure a unit energy constellation. Sketch this constellation. Find d^2 min a
A layer of water seperates two smooth surfaces a distance of 2r. Derive an experssion for the force needed to pul the two surfaces apart. Consider the bottom surface fixed. What is the force needed to seperate the top surface?
A 952 cm3 container of gas is exerting a pressure of 108 kPa while at a temperature of 48 °C. Calculate the pressure of this same amount of gas in a 1236 cm3 container at a temperature of 64 °C.
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