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A typical frequency used by GSM cell phones is 611.0 MHz. What is the wavelength of this signal?
For the elementary process N2O5 (g) = NO2(g) + NO3 (g) the activation energy (Ea) and overall Delta E are 154 KJ/mol, and 136 KJ/mol, respectively. What is the activation energy of the reverse reaction.
Calculate the redox potential of the solution after mixing 25.0 mL of 0.100 M Fe^3+(aq) with 45.0 mL of 0.100 M Sn^2+(aq). E^0 = 0.771 for the ferric/ferrous couple; E^0 = 0.154 for the stannic/stannous couple 2 Fe^3+(aq) + Sn^2+(aq) ? 2Fe^2+(aq) ..
Provide a structure for the following compound: EI mass spectrum: two molecular ions of about equal intensity at m/z = 180 and 182; IR: 1740 cm-1; 1H NMR: ? 1.30 (3H, t J = 7 Hz); ? 1.80 (3H, d, J = 7 Hz); ? 4.23 (2H, q, J = 7 Hz); ? 4.37 (1H, q, ..
A student dissolves 1.50g of copper(II) nitrate in water. After adding aqueous sodium carbonate solution which contains 1.80g of sodium carbonate, the student obtains 0.875g of CuCO3 precipitate.
Three gases (8.00 of methane, CH4, 18.0 of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 degrees Celsius, the total pressure in the container is 3.50 atm. Calculate the partial pressure of e..
Distilled water in the same tube gave a reading of +0.016 degrees. Calculate the specific rotation for the compound.
Which one of the following actions will cause an increase in the equilibrium concentration of NO(g) in a closed reaction chamber?
Draw the structure of the unbranched isomer of C5H11Br that is most reactive in an SN2 reaction.
Choose the answer which presents the chemical formulas NF3, NaBF4, and BF3 in order of increasing solubility of the substances with these formulas in hexane (lowest solubility listed first)
when sulfuric acid is a component of polluted air it chemically attacks statues memorials and monuments made from
Drawa a fat (oil) molecule representing corn oil. The fatty side chains that you need to include are two of the esters group derived from oleic acid and one from the linoleic acid
Why don't you see the effect of rotation on the vibrational frequencies of chromophores in a polyatomic molecule in the liquid phase
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