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Methyl salicylate (oil of wintergreen) is prepared by heating salicylic acid (C7H6O3) with methanol (CH3OH) C7H6O3 + CH3OH ® C8H8O3 + H2O What is the percent yield if reaction of 8.244 g of salicylic acid with an excess of methanol produced a measured yield of 6.835 g of oil of wintergreen?
What is the reducing agent and what has been reduced c. What quantity of iodine can be obtained if 20.0g of NaI is mixed with 10.0g of MnO2 ( and a stoichiometric excess of sulfuric acid)
calculate the molar mass of a nonelectrolyte that lowers the freezing point of 25.00 g of water to -3.9 degrees celsius
1- what is the difference between the geometric arrangement of electron pairs and the geometric arrangement of atoms?
Consider the following system in equillibrium CaCO3(s) = CaO(s) + CO2(g) How many phases are present. Explain.
write out the balanced net ionic equation for the reaction of hydrochloric acid
A 25.264 g cube of aluminum is cooled to a temperature of -15.26*C. If it's placed in 250.00g of water at 35.00*C, what would the final temperature of the aluminum and water be when the system comes to equilibrium? Assume that no heat is lost.
the heat evolved when a mole of octane undergoes complete combustion is 1303 kcal. this is called the heat of
concentrated aqueous hydrochloric acid, the major product obtained was 4-chloro-3,4-dimethyl-2-phenylhexane. Show the mechanism for this reaction.
Chromium metal can be produced from the high temperature reaction of Cr2O3(chromium(III) oxide) with silicon or aluminum by each of the following reactions
A) What is the pH of a solution made by adding 6.21 grams of NaF to 391 mL of 0.317 M HF? (Assume no change in volume takes place.) B) What is the pH of the solution in part A after adding 49.0 mL of 0.100 M HBr?
14 g of Si reacts with 16 g of O to produce SiO2, the only product, with no reactant left over. How much SiO2 would be produced from 34 g of Si and excess O?
which of the following processes are at equilibrium? a)opposing rates of reaction are equal. b)the rate of the forward reaction is faster than the rate of the reverse reaction. c)concentrations of reactants and products do not change.
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