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What is the pH of a solution made of 10 mL of 0.1 M Nh3 (aq) (K = 1.8 X 10^-5) when mixed with 10 mL of 0.1 M NH4Cl?
Which compound has the smallest molar mass?
if 77.0 mL of .150 M HCl (aq) is needed to neutralize all the NH3(g) from a 2.25 gram sample of organic material, calculate the mass percentage of nitroge in the sample.
Ionization energy is the energy needed to eject an electron from an atom or ion. Calculate the ionization energy, IE
Choose the answer which presents the chemical formulas NF3, NaBF4, and BF3 in order of increasing solubility of the substances with these formulas in hexane (lowest solubility listed first)
Draw the structure(s) of the carboxylic acids with the molecular formula C5H10O2 that contain a branched carbon chain.
Reactions of Alcohols, Show how ethanol and cyclohexanol may be used to synthesize cyclohexyl ethyl ether using tosylation followed by Williamson ether synthesis.
Calculate the pressure and composition of air 100 miles above the surface of the earth assuming that the atmosphere has a temperature of 0 celsius independent of altitude. The correct answer is 3.27 X 10^-9 bar; yO2=0.015, yN2=0.985 but I don't kn..
A chemical reaction is found to have an activation energy (Ea = 15 kJ/mol). At a temperature of 505 K, what fraction of collisions have enough energy to exceed the activation energy
The standard entropy of ethane (C2H6, S^0 = 229 J / (mol K) ) is higher than that of ethylene (C2H4, S^0 = 219 J / (mol K) primarily because ethane has _______ accessible ________ states than ethylene at 298 K.
Formic acid, CH2O2, can be decomposed to produce hydrogen. The Lewis structure for formic acid, CH2O2, is show below. The atoms are labeled A, B, C, D, E.
What is the hybridization of each carbon for the following structure? Please explain each one and provide the line structure. Supposedly there should be two hybridized sp2 and two hybridized Sp3
the compound kb5o8middotx h2o was analyzed and found to contain 24.6 of water. if the formula weight of this compound
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