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Write the chemical equation for the formation of CH from H and C atoms. Lone pairs do not need to be included. Then Using the table of bond energies determine the ?H for the above reaction.
Bond Dissociation Energies:H-H 436 kjH-F 569 kjH-C 410 kjH-Br 366 kjH-I 298 kj
preparing semicarbazone derivatives, what is the purpose of adding sodium acetate to semicarbazide hydrochloride?
You are given the following data. S(s) + 3/2 O2(g) → SO3(g) ΔH = -395.2 kJ 2 SO2(g) + O2(g) → 2 SO3(g) ΔH = -198.2 kJ Calculate ΔH
a compound is 40% C, 6.7% H, and 53.3% O by mass. Assume that we have a 100 g sample of this compound. what are the subscripts in the empirical formula?
Histidine has three ionisable functional groups. Write the equilibrium equations for its three ionizations and assign the proper pKa for each ionization.
A mixture of 2.0 mol of H2 (g) and 1.0 mol of O2 (g) is placed in a sealed evacuated container made of a perfect insulating material at 25C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
A sample of gas has a volume of 2 liters at 40 degrees celsius. what volume will the gas occupy at 0 degree celsius.
given an atmospheric pressure of 29.76 in Hg and a reading from a vacuum gauge 29.87 kPa, what is the pressure in the syringe?
If the balloon rises to an altitude at which the temperature is -2.8°C and the pressure is 0.068 atm, what will the volume of the balloon be?
Under standard conditions one of the steps of glycolosis does not occur spontaneously. Can the reaction take place in the cytoplasm of a cell where the concentrations
Find the volume of FeSO4 solution - What volume of 0.200M FeSO 4 solution would be required to react with 20.0mL of 0.250M KMnO 4 according to the following equation?
The molality of sodium nitrate solution us 1.44m. What is mole fraction of NaNo3. The molar mass of NaNo3 is 85.06g/mol
A piece of magnesium (mass=16.2 grams) reacts completely with 10.7 grams of oxygen. In the second reaction you have 61.4 grams of magnesium and 103.7 grams of oxygen
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