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How would the value of molecular weight be affected if all of the liquid is not vaporized? Explain
An electrochemical cell is constructed with a zinc metal anode in contact with a 0.052 M solution of zinc nitrate and a silver cathode in contact with a 0.0042 M solution of silver(I) nitrate. What is the value of Q to use in the Nernst equation f..
For which of the following reactions does delta H reaction = delta H standard H2(g) + S(rhombic) yeilds H2S(g)
It takes 254kj/mol to eject electron for a certain metal surface. What is the longest wavelength of light that can be used to eject electrons from the surface of this metal via the photoelectric effect.
Copper has two isotopes: Cu-63 (abundance = 69.2%, mass = 62.930 amu) and Cu-65 (abundance = 30.8%, mass = 64.928 amu). Calculate the (average) atomic mass of copper.
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation). a. pH = 8.7 for 0.010 M RNH2 (weak base)
HBr is mixed with water. Which is the best description of what you would expect to find in the solution
A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10^?6m. Could the electron make a transition from the ground state to a higher energy level? If it does make a transition,
What mass of water is produced from the complete combustion of 8.10×10?3 of methane
What is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants?
An object has a mass of 50.0g. When it is dropped into a graduated cylinder containing 15mL of water, the water level in the cylinder rises to 32mL.
Borane forms complexes with sulfides and amines. Draw a suitable structure to represent the complex formed between BH3 and dimethyl sulfide
At equilibrium 1.12e-02 mol of HCl is found in the reaction mixture. Calculate the equilibrium pressures of all gases in the reaction vessel and the value of KP for the reaction. Pick the correct statement from the multiple choices. Use the value ..
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