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A .0678 g sample of tin sulfate was dissolved in dilute HCl and treated with 10% BaCl2 solution. The BaCl4 precipitate weighed .0737 g. Determine the formula of this sulfate of tin.
The temperature of 3.50 kg of water is raised by 1.17°C when 1.00 g of hydrazine N2H4 is burned in a bomb calorimeter. The bomb has a heat capacity of 883 J/°C. How much heat is given off by the sample
A compound CN is a weak organic base; a 3.50 x 10-2 M solution has a pH = 11.3. Calculate the kb for CN. The reaction is CN+H2O-->CNH+ + OH-
An oxide of copper is decomposed forming copper metal and oxygen gas. A 0.500 g sample of this oxide is decomposed, forming 0.444 g of copper metal. What is the empirical formula of the copper oxide?
Gasohol contains ethanol (C2H5OH) which when burned reacts with oxygen to produce CO2 (g) and H2O(g). How much heat is produced when 12.5 grams of ethanol burns.
how many moles of carbon dioxide will be formed upon the complete reaction of 0.793 moles carbon monoxide with excess water?
A solution is prepared by dissolving 80.0 g of glucose in 250.0 g of water. The percent by mass glucose of this solution is therefore
Write a suitable mechanism for the cleavage of butyl isopropyl ether with HI at 100 degrees Celsius to form exclusively isopropyl alcohol and 1-iodobutane.
Draw a graph that shows the relative energy of the conformer as a function of the torsional angle. Make sure that you clearly label which conformer corresponds to which position on the graph
This was allowed to react under reflux for an hour and then the products seperated. I wrote out a mechanism before lab and ended up predicting 4-chlorobenzoic acid and 4-chlorophenol as my final products.
An unknown hydrate of calcium nitrate, Ca(NO3)2 * XH2O, is heated to give 30.5% water. What is the water of crystallization (X) for the hydrate
What is the pH of a solution which contains 0.300 moles of Na2HPO4 and 0.200 moles of Na3PO4 per liter of solution?
Describe how you will separate the following mixture of ions in solution. Include an explanation/rationale of the reagent used.
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