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How to find the ratio in a wittig reaction of (E) and (Z) isomers of stilbenes? Started with 5g of sodium hydroxide and 3.8g of benzyltriphenylphosphonium chloride. They want us to find this ratio both before and after isomerization with 75mg of iodine. Also obtained IR, CNMR and HNMR data. Also, how to calculate theorectical yield. The final prodect weight was 3.1124g
if potassium bromide of 25.5 grams is dissolved in enough H 2 O to make 1750 mL of solution, determine the molarity of the solution?
Calculate the grams of sloute required to perpare 750ml of a 7.5 x10-3 M from NiSO46H2O.
describe the reactant and products of the chemical reaction. Qas the reactant (potato chip) completely consumed? What evidence supports your answer?
A solution contains 410.3 g of H2SO4 per litre of solution . If the density is 1.243 g/ml, what will be its molarity and molality.
Draw structural formulas for the following compounds, and mark any chiral centers (asymmetric carbons) with an asterisk: l-bromobutane, 2- bromobutane
what is the energy of an X ray with a wavelength of 3.52×10-9m and a microwave with a wavelenght of 6.63×10-2m?
Calculate the mass of propylene glycol that must be added to 0.500 kg of water to reduce the vapor pressure by 4.60 torr at 40 degrees celcius.
On a TLC plate if two compounds have Rf values of .50 and .61, how far will they be separated from each other on a plate
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32 P, how many grams will remain after 112 days?
The molar solubility of calcium phosphate. b) The molar concentration of calcium ions at equilibrium. c) The molar concentration of phosphate ions at equilibrium.
Important information about Redox titration, How do I calculate the moles of iron (ore sample) and how do I calculate the mass percent of iron in the ore from this problem
How much heat is required to convert 32 g of ethanol at 27 degrees C to the vapor phase at 78 degrees C?
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