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The heat of fusion of acetic acid, the principal organic component of vinegar, is 45.9 cal/g.How much heat (in kilocalories) is required to melt 3.65 mol of solid acetic acid?
if the reaction fe2n s 32 h2 g -gt lt- 2fes nh3g comes to equilibrium at a total pressure of 1 atm analysis of the
How many grams of LiCO3 do you need to weigh out to dissolve in the 5.0 liters? If you had started with a 5000. ppm solution of Li2CO3 solution, how many mL of it would you need to pipet into the 5.0 liter to achieve the same 425 ppb Li 1 solution..
A weak acid HA (pKa = 5.00) was titrated with 1.00 M KOH. The acid solution had a volume of 100.0 mL and a molarity of 0.100 M. Find the pH at the following volumes of base added and make a graph of pH versus Vb:
succinate dehydrogenase produces approximately 1.5 ATPs for each succinate oxidized. electrons passing down the electron transport system from succinate dehydrogenase pass through all of the following EXCEPT
At 63.5C the vapor pressure ofH2O is 175 torr, and that of ethanol,C2H5OH, is 400 torr. A solution is madeby mixing equal masses of H2O andC2H5OH. What is the molality of ethanol in the solution
Sketch the phase diagram of a pure substnace from the follwoing data. (A log P scale may help). There are two solid forms X and Y, which are both denser than the liquid, and Y is denser than X.
large volumes of gases are released.if 100g of TNT were detonated, what would the mass of each product be? is the law of conservation of mass obeyed? 2C7H5(NO2)3--> 12CO(g)+2C(s)+5H2(g)+3N2(g)
The nature of the intermediates in E1 and Sn1 reactions are carbocations. If the molecule doesn't follow that formula then it has either double bonds or rings or both.
Using the Bohr equation for the energy of any level in a hydrogen atom, calculate the energy of each level, n=1 through n=8 and n=(infinity), f. Calculate change in Energy
Explain 3-A 0.421 g sample of aspirin prepared in the laboratory is dissolved in 95% ethanol, diluted with water, and titrated to a phenolphthalein endpoint with 17.3 mL of 0.114 M NaOH. What is the percent purity of aspirin in the sample?
Calculate the standard free energy change for the process N2O5(s)-->N2O5(g) at 25 0C if Vapor pressure of N2O5 at 7.5 degrees C is 100mmHg, and the solid sublimes at a pressure of 1.00 atm at 32.4 0C.
Provide a Diagram of a lab setup that can be used to separate a mixture of ethyl acetate and aspirin (a solid organic compound).
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