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Ammonia is both a donor and an acceptor of hydrogen in hydrogen-bond formation. Draw a diagram showing the hydrogen bonding of an ammonia molecule with two other ammonia molecules. (Draw complete Lewis structures. Assign radical electrons, lone pairs, and atomic charges as appropriate. Use the "Any" or "Coordinate Covalent" bond type to indicate the hydrogen bond(s).)
at 1 atm, how much energy is required to heat 55.0 grams of water at -24.0 degrees Celsius to water at 157.0 degrees Celsius
Consider a glass of 254 mL of water at 25°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved.
What is the pH of the solution created by combining 2.90 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)?
A sample of gas has an initial volume of 13.4 L at a pressure of 1.27 atm. If the sample is compressed to a volume of 10.2 L, what will its pressure be
What is the potassium ion concentration in a 2.5 m k2so4 aqueous solution
What is the molarity of a solution prepared by dissolving 72.0 g of HCI in enough water to make 500 ml of solution.
thermodynamic tables and charts may be used when both H and S are tabulated. since G=H-TS , at constant temperature , deltaG=RT LOG(f2/f1)= delta H- t*deltaS
Calculate the mass (g) of CdC2O4 that will dissolve in 2000 mL of 0.357 M CdBr2 solution. The equation represents the solubility process.
What is the boiling point of a solution made using 813g of sucrose, C12H22O11, in 0.275 kg of water,H2O.
suppose that coal of density 1.5 gcm3 isnbsp pure carbon. it is in fact much more com-nbsp plicated but this is a
You want to determine the protein content in milk with the Kjeldahl method. You take 100 g whole milk and use 100 mL of 0.5 M hydrochloric acid to collect ammonia. You needed 34.50 mL of 0.3512 M NaOH for the back-titration. Calculate the percenta..
Aspirin (C9H8O4) is produced through the following reaction of salicylic acid (C7H6O3) and acetic anhydride (C4H6O3). C7H6O3(s) + C4H6O3-> C9H8O4(s) + HC2H3O2
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