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Emma is analyzing a sample which contains some zinc in it. The sample is .198 g. She reacts it with an excess of hydrochloric acid and measures hydrogen gas produced. The determination shows the sample to be 84% zinc. What amount of hydrogen (measured at STP) was obtained. Write equation first.
Write molecular, complete ionic, and net ionic equations for the reactions that occur , if any, when solutions of the following substances are mixed
During a period of discharge of a lead-acid battery, 405 g of Pb from the anode is converted into PbSO4 (s).
Why is the first step in an electrophilic aromatic bromination reaction so much more endothermic than the first step in an electrophilic addition to an alkene
Silver forms face-centered cubic crystals. The atomic radius of a silver atom is 144 pm. Draw the face of a unit cell with the nuclei of the silver atoms at the lattice points. The atoms are in contact along the diagonal. Calculate the length of a..
why does the alcohol become a double bond instead of remaining analcohol? doesnt it only turn into a double bond if it
thirty pounds of methane are held in a sealed container at 100 degrees F. The volume of the container is two cu ft. Calculate the volume of gas in the container.
the radiu of the aluminum atom is 143 pm. Verify that the metal crystallizes as a face-centered cube.
If a reaction mixture contains only N2O and NO2 at partial pressures of 1.0 atm each, the reaction will be spontaneous until some NO forms in the mixture.
a tank containing liquid butane and one containing liquid propaneare sitting adjacent to one another. each tank is
suppose we redefine the standard state as P=2 atm find the new standard state ^Gf values of the following substances: a) HCl b)N2O
If 3.0 ml of distilled water is added to 2.0 ml of 0.35 M CoCl2 solution , what is the concentration of the resulting solutions?
What volume would be occupied by 100 g of oxygen at a pressure of 1.50 atm and a temperature of 25ºC?
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