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When formic acid is heated, it decomposes to hydrogen and carbon dioxide in a first-order decay:
HCOOH(g) →CO2(g) + H2 (g)
The rate of reaction is monitored by measuring the total pressure in the reaction container.
Time (s) . . . P (torr)0 . . . . . . . . . 22050 . . . . . . . . 324100 . . . . . . . 379150 . . . . . . . 408200 . . . . . . . 423250 . . . . . . . 431300 . . . . . . . 435
At the start of the reaction (time = 0), only formic acid is present. What is the formic acid pressure (in torr) when the total pressure is 356? Hint: use Dalton's law of partial pressure and the reaction stoichiometry.
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of H2O will be: CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s)
The iron-chromium voltaic cell utilizes the following reaction with a measured potential of 0.30 V. What is Î"G ° for this reaction?
What is the molar mass of the unknown solution containing 1.01 g of unknown in 17.74 g biphenyle froze at 42 degrees C. Pure biphenyl freezes at 71.0C
Calculate the change in pH when 9.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
ch2 ch2 reacts with hydrogen gas to give ch3ch3 you need to estimate the heat released when bond enthalpies are h h
Predict the rate of change in the concentration of N2O over this time interval. In other words, what is dt [N2O]/ dt?
Calculate the concentration of hydronium ions [H3O+] from the measured pH values. Express your answer in two significant figures. Show your all work.
When cyclohexane (C6H12) is burned in excess oxygen to produce carbon dioxide gas and liquid water, it releases 3919kJ of heat per mole of cyclohexane burned.
Ammonia,NH3 ; ammonium nitrate,NH4NO3 ; and ammonium hydrogen phosphate (NH4)2HPO4, , are all common fertilizers. Rank the compounds in order from largest mass percent of nitrogen to smallest mass percent of nitrogen.
You add 10.0 mls of 0.100 M H2SO4(aq) to 10.0 mls of 0.100 M NaOH(aq). How many moles of water are formed. Is there a limiting reagent. Select one: a. 0.00200 moles b. 0.00100 moles c. 0.200 moles d. 0.100 moles
What would the theoretical yield in moles be and how would you calculate that? What would the theoretical yield in grams be and how would you calculate that?
In ethanol, with an absorbance of 1.210 (no units) at a wavelength of 530 nm. At this wavelength, the extinction coefficient of rhodamine 6G in EtOH is 116,000M^-1 cm^-1. If I have a 0.100 M solution of rhodamine 6G, what pathlength cell will be n..
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