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An organic acid has a molecular weight of 192. A 100 mg sample of this acid was burned in an excess of oxygen in the apparatus. The only compounds that make up this acid are carbon, hydrogen and oxygen. In the U tube apparatus, 137.53 mg of carbon dioxide was caught and 37.8 mg of water was caught. Determine the exact formula of the acid. Make sure that the formula weight equals 192.
1. C4H16O8
2. C8H16O5
3. C7H12O6
4. C7H2O7
5. C6H8O7
A mixture containing 0.480 mol He(g), 0.300 mol Ne(g), and 0.118 mol Ar(g) is confined in a 7.00-L vessel at 25C. Calculate the partial pressure of He, Ne, and Ar in the mixture.
when companies sell compressed gas in steel cylinders, they usually quote the contents as volume of gas at 1 atm pressure at tempertaure of 20 degrees celcius.
What is the melting range of a mixture of both trans-Cinnamic and urea?
How much energy (in kilojoules) is required to convert 285 ml of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 ?
calculate the molecular mass of the nonionic solutes. 8.02 grams of solute in 8.61 grams of water lower the freezing point to -0.430 degress celcius.
Explain the fact that KOH is much more soluble in liquid ammonia containing a little water than in pure liquid ammonia.
Describe any important differences between benzopinacol and benzopinacolone in the IR, H NMR spectra.
A solution is prepared by adding some solid CaF2 to water and allowing the solid to come to equilibrium with the solution. The equilibrium constant for the reaction below is Kc = 3.9x10-11.
Using the periodic table, arrange the atoms in each of the following sets in order of increasing electronegativity: a) CL, F, Br; b) B, O, N; c) Mg, F, S
According to valence bond theory, the triple bond in ethyne (acetylene, C2H2) consists of A) three sigma bonds and no pi bonds B) two sigma bonds and one pi bond C one sigma bond
The disinfectant hydrogen peroxide (H2O2) decomposes to form water and oxygen gas.How much O2 will result from the decomposition of 3.21 mol of hydrogen peroxide?Answer in units of mol.
Calculate the heats of reaction for the following unbalanced reactions. Then use Hess' law to find the heat of reaction for the overall process.
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