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Explain the hybridization state of C and N atoms in tryptophan as well as determine the number of sigma and pi bonds in the molecule.
if your input is a radiative heat source at 150 C, what is the rate at which heat needs to be added to produce the desired work and at what temperature will the engine dump exceess heat?
to obtain the same antifreeze protection requires 76 g of propylene glycol to replace each 62 g of ethylene glycol.
For 1 mol of an ideal gas, pext = p = 101 kPa (pressure remains constant). The temperature is changed from 100 degrees C to 25.0 degrees C. Calculate q, w, ΔU and ΔH. Assume CV,m = 3/2 R.
what is the wavelength of a photon that has three times as much energy as that of a photon whose wavelength is 779 nm.
What is the final molar concentration of every species remaining in aqueous solution of the following reaction
An iron ore sample is found to be 35.00% Fe by mass. How many grams of ore are needed to obtain 454.0 grams of Fe
What mass of ethane gas (C2H6) must burn in excess oxygen to produce 2.00 x 103 kJ of heat, given the thermochemical equation. 2C2H6(g) + 7O2(g) ? 4CO2(g) + 6H2O(l) ?H = -3.12 x 103 kJ
A coffee cup calorimeter contains 28.32 g of water, at 20.2 deg C. Then 79.68 g of water, with an initial temperature of 65.8 deg C, was added to the calorimeter. The final temperature of the water in the calorimeter was 23.5 deg C. What is the he..
how much water would be needed to completely dissolve 1.78 of the gas at a pressure of 730 and a temperature of 27? a
A 74.0-mL sample of 0.13 M HNO2 (Ka = 4.0 × 10-4) is titrated with 0.14 M NaOH. What is the pH after 25.8 mL of NaOH has been added?
In the near future, the college will attempt to reduce the cost of chemicals used in campus laboratories. One option suggests the chemistry department use household chemicals instead of expensive laboratory grade materials were ever possible.
NaOH to achieve a phenolphthalein end point. Express the acidity of the wine in terms of grams of tartaric acid (H2C4H4O6, fw 150.09) per 100 mL of wine.
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