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Identify the species that is oxidized and the species that is reduced in each reaction.Write out two half reaction to show how many electrons are gained or lost by each species.
1]. Mg + Fe^2+--------Mg^2+ + Fe
2]. Cu^2+ + Sn ---------Sn^2+ + Cu
3]. 4Na +O2 ---------2 Na2O
The mass spectrum of a compound that contains two bromine atoms gives isotope peaks with relative intensities of 1:2:1 for the M, M+2 and M+4 peaks, respectively. Explain why.
Sample of solid naphthalene is introduced into an evacuated flask. Use the data below to calculate the equilibrium vapor pressure of naphthalene (C10H8) in the flask at 25°C.
Ben Franklin dropped the oil on the surface of a lake and found that 2 mL of oil gave a circle of radius 30 m. Estimate the volumetric size of an oil molecule in angstroms, give one significant digit.
describe the change in conductivity as the concentration of the NaCl solution was increased by the addition of NaCl drops
Calculate the concentration of H2SO4 if 25.00 mL of the acid is titrated with 41.70 mL of 3.000 M KOH to produce K2SO4 and water
If the caffeine concentration in a particular brand of soda is 3.35 mg/oz, drinking how many cans of soda would be lethal?
Using active extraction (changing the polarity) and a gravity filtration to remove a component, describe how you would obtain pure naphthoic acid from this mixture.
What combustion products are produced when materials made from polyacrylonitrile smolder and burn?
Determine the molarity of a solution of sodium hydroxide (NaOH) if 27.9 mL of this solution combines exactly with 22.30 mL of 0.253 M
Calculate the feed ratio of adipic acid and hexamethylene diamine that should be employed to obtain polyamide of approximately 15000 molecular
Camphor (C10H16O) is a natural compound found in the wood of camphor laurel, an evergreen native to southeast Asia. Borneol (C10H18O) and isoborneol (C10H18O) are similar to camphor
Carry out the correct operation on the following set of values. Give answers in correct units and in the correct number of significant digits.
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