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For each of the subsequent molecules, offer a Lewis structure, including formal charge and resonance. Utilizing the table of bond enthalpies, along with the subsequent information, estimate? H°f for each of these molecules in the gas phase at 25°C? H°f (C(g)) = +717 kJ/mol DC-Cl = 339 kJ/mol;
a) CH3OH (methanol)
b) COCl2 (phosgene) (Note: C is the central atom.) c) H2NOH (hydroxylamine) d) N2O4 (bonded like O2N-NO2)
how much potassium chlorate in needed to produce 20.0mL of oxygen gas at 670mm Hg and 20 degrees celcius?
If a chemistry student collected 834 mL of gas at 25 degrees C and 8.00 x 10^2 torr, how many moles did she collect?
Balance the equation and answer in terms of moles.Chlorine gas can be produced commercially by passing an electric current through a concentrated solution of sodium chloride (brine).
The freezing point of t-butanol is 25.50°C and Kf is 9.1°C·kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a 12.0 g sample of t-butanol is 24.59°C, how many grams of water are present in the sample?
If the 0.020 moles of HCl were added to 250 ml of de-ionized water instead of the buffer, what would be the pH be? Does this tell you if the buffer successful prevents large changes in pH
The Group 5A elements N,P,As have lower (less negative) electron affinities than most of the Group 4A or Group 6A elements because N,P,As have half-filled subshells.
What is the hydronium ion concentration of a 0.500 M acetic acid solution with Ka = 1.8 x 10-5? The equation for the dissociation of acetic acid is: CH3CO2H(aq) + H2O(l) H3O+(aq) + CH3CO2-(aq)
Explain why the CO ligand donates the lone pair on carbon in bonding to metals rather than the pair
Determine the minimum concentration of the precipitating agent on the right to cause precipitation of the cation from the solution on the left.
if 280 nm wavelenght light were used instead of (still 30mJ) how would the experimental result change consifer both the numbers and the energy of the electrons
if the vapor pressure of an aqueous solution of ethylene glycol c2h6o2 62.06844 gmol was found to be 52.3 torr at 39.8
neither carbon tetrachloride nor trans chbrchbr have dipole moments. both have cery different molecular geometries.
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