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If the uncertainty in velocity of an electron is 4700.0 m/s, what is the minimum uncertainty in its position?
Specify what ions are present in solution upon dissolving each of the following substances in water. ZnCl2
How much heat (in kj) is required to warm 13.0 C of ice, initially at -15.0 C, to steam at 113.0 C ? The heat capacity of ice is 2.09 J/gC and that of steam is 2.01 J/gC
Oxalic acid, H2C2O4 has acid dissociation constants Ka1 = 5.9 x 102 and Ka2 = 6.4 x 105. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H2SO3.
How many milliliters of 0.105 M HCl are needed to titrate each of the following solutions to the equivalence point:-- 45.0 mL of 0.0950 M NaOH
Using resonance contributors, explain why the nitrile group is a deactivator and a meta director in electrophilic aromatic substitution
Vacuum pumps can achieve very low pressures. If a vacuum pump can generate a vacuum of 1 nTorr at 25 °C, and assuming that air consists of N2 molecules with a collision diameter of 395 pm
Using methyl iodide with amines such as triethylamine, ethyldiisopropylamine, describe how the nucleophilicity of the amine affects the rate of an Sn2 reactions Use specific chemical examples to support the conclusion
Why does the electron energy threshold of dissociation almost always exceeds the actual dissociation energy in contrast to dissociation, stimulated by vibrational excitation
This electrophilic addition reaction involves a carbocation intermediate. Protonation of which sp2 hybridized carbon would form the most stable carbocation?
What types of stationary phases used for column chromatography and HPLC? How these staionary phase work and what types of compounds can be separated using this?
A 150 -g sample of water is cooled from 30 degrees C to 15 degrees C, thereby losing approximately 9420 J of heat. What is the change in E in J.
a mixture containing 80.0 nm iodoacetone designated a and 64.0 nmp-dichlorobenzene designated b gave the relative
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