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Combustion of a .2000g sample of vitamin C sample produced .2998 g of carbon dioxide and .0819 g of water. If this compound is composed of C, H, and O, then what is its empirical formula?
The volume of potassium permanganate required to titrate 10 mL of the new hydrogen peroxide (mL):20mL (c) Calculate the concentration of H2O2 from the volume of KMnO4 used and the stoichiometry of the reaction (MW of H2O2 is 34.01).
If 6.15 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 -! CO2 + H2O, how much oxygen is required
Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?
A sample of 1.42 g of Helium and an unweighed quantity of Oxygen are mixed in a flask at room temperature. The partial pressure of Helium is 42.5 torr and of oxygen is 158 torr.
Given the following reaction: 2 O2 + CH4 CO2 + 2 H2O What mass of CH4 is required to completely react with 100 grams of oxygen.
when liquid water is put into an evacuated vessel at 25 celsius what is the sign of the change in enthalpy, entropy, free energy, and temperature for the system during this process?
At equilibrium, the flask contains 90.6g HI Calculate the equilibrium constant for the reaction at this temperature.
a three carbon species that has a carbon level of zero at each carbon atom. b) two compounds that contain three carbon atoms and have a carbon atom with a carbon level of 1.
Determine how long will it take for the concentration to decrease to 0.13 mol/L express your answer in seconds.
A voltaic cell utilizes the following reaction: 2Fe3+ + H2 --> 2Fe2+ + 2H+ what is the emf of this cell under standard conditions? what is the emf for this cell
Calculate the average formal charge on an oxygen atom in the structure of the phosphate ion that minimizes formal charges, such as demonstrated in Part A.
Determine the temperature change is caused by heat energy and using a beaker that contains 100 mL of H 2 O thermally insulated from its surroundings, one mol of solid CaCl 2 is mixed and solution is stirred
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