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Suppose Precipitation of the mononitration product of bromobenzene prevents dinitration from occurring. Define how this experimental result is an application of the Le Chatelier principle.
Nitromethane CH3NO2) burns in air to produce significant amounts of heat. 2 CH3NO2(l) + 3/2 O2(g) --> 2 CO2(g) + 3 H2O(l) + N2(g). delta H^0 reaction = -1418 kJ
how can their efficiency be less than 100 and the law of conservation of energy still be valid? 9. an incandescent
question when a mix of 10 ml of 2 m na2co3 solution with 8 ml of 1 m hcl solution co2 is producedna2co3 aq 2 hcl aq
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 8.54 to 5.58? Use E notation and 3 significant figures.
The half-life for the second order reaction of a substance A is 55 seconds when [A]o is 0.84 M. What time is needed for the concentration to decrease to 1/4 of the original value.
why is it possible to separate the product 6-ethoxycarbonyl-35-diphenyl-2-cyclohexenone from sodium hydroxide using
Calculate the minimum mass of ethane that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits. 2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
The owner wants to grow perch and needs the pH around 7.0. If the daily water flow into and out of the pond averages 30 m^3 per day with a pH similar to that of the pond, what is the minimum amount of limestone (CaCO3) needed to bring the pH
Predict whether the entropy change is positive or negative for each of the following reactions. Give reasons for your predictions.
Gas A2 reacts with gas B2 to form gas AB at a constant temperature. The bond energy of AB is much greater that that of either reactant. What can be said about the sign of pH, pSsurr, and pS
Explain why the extrapolated temperature is used to determine the maximum temperature of the mixture rather than the highest recored temperature in the experiment
What is the pressure of a container that has 7 atm pressure coming from O2, 2 atm of pressure coming from N2, 3 atm of pressure coming from CO2?
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