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Combustion of 1.96g of a compound containing only hydrogen and carbon produced 6.35g of CO2 and 2.25g of H2O. The molecular weight of the unknown hydrocarbon was determined by mass spectroscopy to be 82.1 g/mol. What is the Molecular formula of the hydrocarbon?
a 25.0 ml sample of 0.35m hcooh ka1.77x10-4 is titrated with 0.20 m koh. what is the ph of the solution after 25.0 ml
How much stomach acid was neutralized by the 4.3628 g tablet. How much stomach acid would have neutralized by the original 5.6831 tablet
why does heating dicyclopentadiene form cyclopentadiene, whereas allowing cyclopentadiene to stand at room temperature lead to dicyclopentadiene
the equilibrium pressure of h2 over solid uranium and uranium hydride uh3 at 500 k is 139 pa. calculate the standard
Imagine that it is a very hot summer day outside. To help quench your thirst while outdoors, you decide to make yourself a big batch of ice tea. When you add large quantity of sugar to the tea to sweeten it, you notice that where the sugar lands o..
What are the electron configurations of the following metal ions: Fe3+, Zr4+ and Co3+?. Draw a) the high-spin electron configuration for a complex containing Fe2+ and b) the low- spin electron configuration for a complex containing Fe2+. Assume an..
what similar ingredients found in antacids are similar to those ingredients found in alka-seltzer? please be detailed
C2H5OH (l) + 3O2(g) ---------> 2CO2(g) + 3H2O(l) ?H = - 1.37 x 103 kJ When a 24.8-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is burned, how much energy is released as heat?
Calculate the theoretical mass of the N2O3 in the experiment. Calculate the percent yield of the product made in the experiment.
What is the wavelength, in nanometers, of the light emitted when the electron in a hydrogen atom drops from the energy level n_i = 12 to n_f = 5
consider a .7 L of a buffer composed of 0.4 M HClO and 0.5 NaClO? How many moles of strong base could this buffer withstand?
What is the ratio of enantiomers of 2-octanol in the product mixture? 55% (S) and 45% (R). However, I am not sure how to draw the structure of the major enantiomer produced in this reaction. Indicate the configuration of the stereogenic center usi..
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