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A certain polymer (Tg=10?) has a melt viscosity of 1.5x105 poises at 25?. Estimate its viscosity at 60?.
The solution is connected to a SCE referece cell (Esce = 0.241V) and a potential of Ecell= 1.169 V is measured. determine the concentration of BrO3 (aq) in the solution
How does concentrated H2SO4 catalyze the esterfication reaction of ethanol and acetic acid to form ethyl acetate. Explain.
State the balanced, net-ionic equations for the cell reactions for the subsequent half-cell combinations at standard conditions. Be sure to consider direction of spontaneity.
What is the pH and the [OH-] of the solutions with the following [H3O+]? a) 2.3 x10-4 , b) 4.8 x10-8, c) 6.3 x10-2
If the pH of a bicarbonate-carbonic acid buffer is 7.90. Compute the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
Calculate the molarity of each of the following solutions. Part A - 0.14mol of LiNO3 in 6.0L of solution.
A typical commercial-grade phosphoric acid solution is 75% phosphoric acid by mass, and has a density of 1.57 grams per milliliter. What are the molarity and molality of H3PO4 in this acid?
how many grams of copper are produced when excess aluminum reacts with 11.0 g of copper oxide.
Assuming that the gas becomes saturated with benzene vapor and that the total gas volume and temperature remain constant, what is the vapor pressure of the benzene in torr
calculate the wavelength of the electromagnetic radiation required to excite an electron from the ground state to the
The first steps in the radioactive decay of 257Uuh involves the rapid and successive emission of 4 alpha particles
State the freezing point on the graph of temperature vs. time. This is not the same for every solution
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