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1)The atmosphere contains 78% N2(g), 21% O2(g), and traces of other gases. These gases react at high temperature to form nitrogen monoxide, an important pollutant.
N2(g) + O2(g)↔2NO(g)
For this reaction at a certain temperature, Kc = 3.8 x 10-5. If the initial concentration of N2(g) is 0.78 mol/L, and O2(g) is 0.21 mol/L, what will be the equilibrium concentration of NO(g) at this temperature?
Express the answer in the a.b x10-c format. abc
2)At a certain temperature, Kc = 6.0 x 10-4 for the reaction between sulfur trioxide gas and gaseous hydrogen fluoride to produce gaseous sulfur hexafluoride and water vapour.
SO3(g) + 6HF(g)↔SF6(g) + 3H2O(g)
Calculate the equilibrium concentration of sulfur hexafluoride that would result if 1.8 mol of sulfur trioxide was mixed with 5.6 mol of hydrogen fluoride in a 2.1 L container.
Phosphorus-32 is used in the treatment of leukemia. It has a half-life of 14 days. If a sample received by a medical lab has a mass of 16.0 g, how many grams of the sample is still active 8.0 weeks later.
Beta carotene is the most important of the A vitamins. Its molar mass (g/mol) can be determined by measuring the osmotic pressure generated by a given mass of beta carotene dissolved in the solvent chloroform. Compute the molar mass of beta carote..
When sodium reacts with chlorine, 411 kj/mol is released. Calculate the amount of heat released if 1.37 mol of sodium form.
A chemist prepares a sample of hydrogen bromide and finds that it occupies 258 mL at 60 degrees celsisus and 476 Torr. What volume would it occupy at 0 degrees celsisus at the same pressure? Answer in units of mL to 5 decimal places.
what is the freezing point of a solution containing 3.10 gramsbenzene molar mass 78.11 gmol dissolved in 32.0 grams
A mixture of gases has the partial pressures of 0.308 atm due to He, .259 atm due to N2, and the rest is due to O2. If the total pressure of the mixture is 752 mmHg, what is the partial pressure due to oxygen?
Calculate the excluded volume for one mole of molecules, which is the constant b. How does this compare with the sum of the volumes of 1 mole of the same molecule
Understanding the high-temperature behavior of nitrogen oxides is essential for controlling pollution generated in automobile engines. The decomposition of nitric oxide (NO) to N2 and O2 is second order with a rate constant of 0.0796 M?
This experiment would have been more informative if errors in the experiment did not occur in both trials. The mass percentages calculated in both trials are far off from each other.
Why did the Montreal Protocol succeed in limiting global emissions of chlorofluorocarbons (CFCs), whereas the world has found it difficult to limit the emissions of CO2 ?
a gaseous mixture of o2 and kr has a density of 1.102 gl at 420 torr and 300. k. what is the mole percent o2 in the
1.what is a plasmon?2.what metals give rise to the best plasmons? why3.why are plasmonic better than electronics for
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