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Aspirin, C9H8O4 is prepared by reacting salicylic acid, C7H6O3 with acetic anhydride, C4H6O3 in the reaction
2C7H6O3(s) + C4H6O3(l) > 2C9H8O4(s) + H2O(l)
Prepare 25.0g of aspirin, she is as well told that she should use a 50.0% excess of acetic anhydride as well as expect to get a 65.0 % yield in the reaction. Explain how many grams of salicylic acid as well as of acetic acid should she use?
A sample of argon gas has a volume of 735 mL at a pressure of 1.20 atm and a temperature of 112 degrees C. What is the volume of gas, in milliliters
Calculate the pH of the following solution: A mixture of equal volumes of 0.35 M glycine and 0.55 M HCL.
A mixure of gases collected over water at 14 degrees celciushas a total pressure of 0.981 atm and occupies 55mL. How many grams of water escaped into the vapor state
The solubility of MnSO4 monohydrate in water at 20deg C is 70.0g per 100.0 mL of water. A solution at 20deg C that is 4.22M in MnSO4 monohydrate is best described as a _______ solution.
In most amines, the nitrogen atom is hybridized, with a pyramidal structure and bond angles close to 109 . In urea, both nitrogen atoms are found to be planar
Solid aluminum acetate is slowly added to 75.0 mL of a 0.0536 M sodium phosphate solution. The concentration of aluminum ion required to just initiate precipitation is
What is the density of an object with a weight of 32 grams if it has a volume of 4 cubic centimeters
How many moles of oxygen molecules would be needed to react with 111.2 grams of iron? How many grams of rust would result from this reaction
The MnO4(-) is often used to analyze for the Fe(2+) content of an aqueous solution via the reaction MnO4(-) + Fe(2+) ---> Fe(3+) + Mn(2+) in acidic solution. What is the ratio of Fe(2+):MnO4(-) in the balanced equation
Calculate the equilibrium partial pressure of bromine gas. No approximations can be made because the equilibrium constant is too large. I2 (g) + Br2 (g) 2IBr (g)
you are given two small bottles of white crystalline carbohydrates. one is label glucose and the other dextrose. what
The activation energy for a reaction is 55.5 kj/mol. if the rate constant for the reaction has a value of 1.35 * 10^2 s^-1 at 25 degrees Celsius what will it be at 95 degrees Celsius
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