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Consider the solubility rules and identify all of the spectator ions when the following chemicals react: A) lead (II) nitrate and ammonium chloride B) Barium bromide and potassium sulfate. You must show all work (equations) clearly and in detail to receive credit.
100g of orange juice is said to contain about 50mg of ascorbic acid. How much of a 2E-4M DCPIP titrant should be required to titate a 100g sample. What would be a good sample size.
Calculate the standard entropy change for the following reaction at 25 °C. Mg(OH)2(s) + 2HCL(g) --> MgCl2(s) + 2H20(g)
A sample of CO2 gas at 795 torr is cooled from 25°C until the new pressure is 125 torr. Calculate the new temperature of the gas.
1. H2O2(aq) acting as an oxidizing agent in acidic solution. Write the balanced half reaction?
dissolve CaCl2 in water to make a mixture that is 34.0% calcium chloride by mass. If the total mass of the mixture is 222.3 g, what masses of CaCl2 and water should be used?
a 40-year-old manager at a prominent legal firm in l.a. experiences abdominal pain post lunch. he goes to the restroom
The U.S. Navy has a system for communicating with submerged submarines. The system uses radio waves with a frequency of 76 s-1. What is the wavelength of this radiation in meters?
the standard molar enthalpy of vaporization for water is 40.79 kjmol. what mass of steam is required to release 500. kj
Draw the structures of the E and Z stereoisomers of 1,4-diphenyl-2-butene-1,4-dione and label which is the cis and which is the trans
Describe the error that would occur if the magnesium were to slide into the HCl in the test tube before the system is sealed off.
Precipitation of the mononitration product of bromobenzene prevents dinitration from occurring. Explain how this experimental result is an application of the Le Chatelier principle.
The coinage metals -- copper, silver, and gold -- crystallize in a cubic closest packed structure. Use the density of copper (8.95 g/cm3) and its molar mass (63.55 g/mol) to calculate an approximate atomic radius for copper.
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