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A compound contains only carbon, hydrogen and oxygen. Combustion of 7.30 mg of the compound yields 10.68 mg of carbon dioxide and 4.37 mg of water. What is the empirical formula of this compound?
What is the pH of a solution that results from diluting 0.30 mol acetic acid (CH3CO2H) and 0.20 mol sodium acetate (NaCH3CO2) with water to a volume of 1.0 L?
Consider the following reaction in a closed reaction flask. If 1.50 atm of gas A is allowed to react with 0.500 atm of gas B and the reaction goes to completion at constant temperature and volume, what is the total pressure in the reaction flask a..
a sample of naphthalene which should be pure white was found to have a grayish color after the usual purification
Heat of hydrogenation of 1,3,5-hexatriene is -335 kj/mol. that for 1,5- hexadiene is -252 kj/mol. Estimate the resonance energy of hexatriene.
Apotential of 0.33V is measured against a Ag/AgCl electrode. What would it be when measured against: NHE and SCE
Complete and balance the following metallurgical reactions. Phases are optional. I don't need them balanced, I can do that. I'm just not sure what's on the other side of the arrows. a. MoO3(s) + H2(g) --> b. Cu2S(s) + O2(g) -->
Write a reaction mechanism for the dehydration of 4,5-dimethyl-3-hexanol in concentrated phosphoric acid. Use curved arrows to show electron movement and clearly show the major product formed.
Calculate the maximum work available from 57.0 g of aluminum in the following cell when the cell potential is 1.15 V. Note that O2 is reduced to H2O. Al(s) | Al3+(aq) || H+(aq) | O2(g) | Pt
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.97 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? draw possible ..
When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced. CaCO3 + 2HCl image from custom entry tool CaCl2 + H2O + CO2
Calculate the half life of N2O5 and B. how long does it take for the N2O5 concentration to drop one tenth of its original value. * I believe the half life is 10,000 seconds for part A. But I am having trouble with part B.
calculate the molecular mass of paba a common sunscreen agent. when 8.32g of paba is dissolved in 150.0g of chloroform
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