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Activating effects: Using resonance contributors, explain why the methoxy group is an activator and an ortho/para director in electrophilic aromatic substitution?
the balance N2 is burned with 40 % excess air, (a) how much air is needed per 100 moles of gas, and (b) what will be the analysis of the product gas on a wet basis?
how many moles of hcl need to be added to 15.0 ml of 0.50 m naz to have a solution with a ph of 6.50? ka of hz is
The precipitate formed was washed and dried .Its mass was 0.287g.Find the mass of NaCl in the initial sample.
determine the mass of silver phosphate formed when 4.33 g of silver nitrate is reacted with 22.7 mL of .118 M K3PO4 ?
how many grams of sodium lactate must be added to a 1.00l solution of .400m lactic acid to make a buffer with a ph of
One way to approach the problem is to imagine the reaction proceeds to equilibrium by first going 100% to completion and then backing up a little
What is [Pb^2+] in a saturated solution of PbCO3 if Na2CO3,with a common ion is added to give [CO3^2-]=3.0x10^-4 M? PbCO3 Ksp=7.4x10^-14
At a temperature of 415 C and a pressure of 725 mmhg , how many grams of NH3 can be produced when 4.10 L of NO2 react?
if the density of mercury is 13.6g/cm3, what will be the volume of 300g of mercury ?
What is the balanced chemical equation for the complete combustion of benzoic acid, C6H5CO2H, to form carbon dioxide and water
A rigid tank of volume 0.5 m^3 is connected to a piston cylinder assembly by a valve, as shown below. Both vessels contain pure water. They a re immersed in a constant-temperature bath at 200°C and 600 kPa
Sodium methoxide reaction: Pipet 1.65 mL of a 25% (by weight) solution of sodium methoxide in methanol into a 10 mL reaction flask.
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