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Define what would happen if the Mg ribbon was left out and a layer of Magnesium oxide formed on it and was not rubbed off with the steel wool? Explain what would happen to your results? Define and why is it significant that we compute the volume of "dry" gas?
What is the hybirdization of a centeral atom that has four sigma bonds and has no pairs of electrons?
A 64 g piece of ice at 0 degrees celsius is added to a sample of water at 9 degrees celsius. all of the ice melts and the temperature of the water decreases to 0 degrees celsius. How many grams of water were in the sample?
Calculate the molarity of the ions present in these salt solutions. Assume each salt to be 100% dissociated. a. 0.75M ZnBr2
molybdenum metal must absorb radiation with a minimum frequency of 1.09 x 1015s-1 before it can emit an electron from
the mass of the flask is measured when the outside of the flask is wet. However in part B.3 the outside of the flask is dried before its mass is measured.
Conjugate Pairs of Acids and Bases, What is the base if the acid is H2PO4- and the equation of the pair?
What mass of carbon dioxide is present in 1.00 \rm m^3 of dry air at a temperature of 25 C and a pressure of 685 torr. Calculate the mass percentage of oxygen in dry air.
Determine the mole fraction of sodium chloride(NaCl) in the solution if this solution is formed by mixing 17.0 grams of sodium chloride NaCl in 85.0 grams of Water?
Cyclopropane, C3H6 is an anesthetic given by inhalation. How many grams are in 0.23 mole of cyclopropane
Mixtures of helium and oxygen are used in scuba diving tanks to help prevent "the bends". For a particular dive, 18.9 L of oxygen gas at 25.0oC and 1.25 atm, and 7.58 L of helium gas at 25.0oC and 1.13 atm were pumped into a tank with a volume of ..
Under what circumstances with regards to degrees of no polar characters are frenkel and schottky defects likely?
Compare the results of your calculations from 2 and 4 above with the actual molarity of the Ba(OH)2 solution. Which method of analysis, equivalence point or gravimetric determination, was more accurate in your experiment. Why
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