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What are the oxidation states of manganese? I need the procedures, and safety precautions taken when doing this lab.
What is the concentration of g salt per 100 g water of a saturated solution in which 3.82 g of salt are dissolved in 9.54 g of water?
if the oven uses microwave radiation of wavelength 12.2 cm how many photons of this radiation are required to heat 1.28
Explain the effect of the following experimental errors on your results: a) You add hexane to the reaction flask instead of 1-hexene b) You use 3% hydrogen peroxide instead of 30% c) You forget to add potassium carbonate in the seperation step.
Draw the three different plates you would expect from obtaining a TLC from ibuprofen on silica gel using (a) toluene, (b) ethyl acetate, and (c) methanol as the eluting solvents
Find the neergy of a photon of ultraviolet light whose frequency is 2 x 10^16 Hz. Do the same for the photon of radio waves
An electrochemical cell is constructed with a zinc metal anode in contact with a 0.0520M solution of zinc(II) nitrate and a silver cathode in contact with a 0.00420M solution of silver(I) nitrate
the rate of the constants for the above gas pharse reaction is 1.438M^-2 s^-1 at exactly 642.5 Kelvin and 21.64 M^-1 s^-1 at exactly 838.1 Kelvin. What is the value of the activation energy of the reaction in KJ/mole?
A sample of nitrogen gas occupies 1.55 L at 27.0 degrees Celsius and 1.00atm. What will the volume be at -100.0 degrees Celsius and the same pressure?
Which of the following substances have a standard heat of formation (?Hf°) of zero? Fe at 1200 °C Cl2(g) at 2 atm O2(g) at 25.0 °C and 1 atm C2H6(g) at standard conditions
what volume of methane, measured at STP, must be burned? (ΔH°combustion for CH4 = -891 kJ/mol)
A solution of methanol, CH3OH, cotains 55.0 grams of methanol in 100. mL of water solution. What is the molarity of methanol in the solution?
A litre of solution containing 0.1 M of CH3COOH and 0.1 M of CH3COONa provides a buffer of pH 4.74 . calculate the pH of a solution after the addition of 0.02 M of NaOH .
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