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What is the standard heat of reaction for: sugar and ethanol are "burned" to water vapor and carbon dioxide? I got -1550.93 but it says that I'm wrong.
Determine the volume of 0.210 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is: H2SO4(aq)+ 2KOH(aq) â†' K2SO4(aq)+ 2H2O(l)
The solubility of slaked lime, Ca(OH)2, in water is 0.185g/100mL. What volume of 0.00250 M HCl is needed to neutralize 11.0mL of saturated Ca(OH)2 solution
some inexpensive humidity detection systems consist of a piece of paper saturated with Na2CoCl4 that changes colors in dry or humid air.
Sulfamic acid, HSO3NH2, and sodium nitrite, NaNO2, should not be brought together as solids for safety reasons, why is water added to the vial containing your unknown sample as well as to the Erlenmeyer flask containing sulfamic acid
One radio station operates on an assigned frequency of 88.1 megahertz while another operates on an assigned frequency of 1460 kilohertz. What is the ratio of the larger to smaller value?
Write a complete stepwise mechanism for the reaction of cyclopentanone with bromine in acetic acid to give 2-bromocyclopentanone. Show all intermediate structures and all electron flow with arrows.
Alkynes can be hydrated in the presence of acid and HgSO4, by electrophilic addition of a molecule of water to the triple bond.
Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4 species that are isoelectronic with Ar
The reaction 4PH3(g) -> P4(g) + 6H2(g) is found to be first order in PH3 with a rate constant of 1.6*10^-2 sec^-1 at 650 C. a)Give the rate law (rate equation) for the reaction and explicitly state how the reaction rate in this case would be defin..
calculate the work required to expand the cell surface. Assume the cell is surrounded by water and that T=310K.
A chemist wishes to determine the concentration of CrO42- electrochemically. A cell is constructed consisting of a saturated calomel electrode (SCE) and a silver wire coated with Ag2CrO4. The ° value for the following half reaction is +0.446 V rel..
The student then titrated 25ml of the same buffer with 0.1115M NaOH. The observed titration curve is shown before. what is the concentration of the weak acid in the buffer?
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