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As of the writing of this text, EPA standards limit atmospheric ozone levels in urban environments to 84 ppb. How many moles of ozone would there be in the air above Los Angeles County (area about 4000 square miles; consider a height of 10 m above the ground) if ozone was at this concentration?
Explain the gas inside a flexible container e.g., a balloon is allowed to expand against a constant external pressure of 1.1 bar until the volume enlarge from 2.6 L to 8.6 L. Compute the amount of work done on the system
Compute the theoretical yield (by mass) of Ca3(PO4)2. Compute the percentage yield (by mass) for the reaction if 64.3 g of Ca3(PO4)2 is actually obtained.
Atoms, such as sodium, typically give line spectra, as opposed to continuous spectra. Given that such spectra are due to changes in the energies of electrons, explain, using a suitable diagram, what this tells you about the electronic structure of..
if 2.20 l ofa gas at 754 torr and 580 ml of gas at 0.988 atm are combined and allowed to diffuse in a 6.00l container
Determine the values of ΔGo, ΔSo ,ΔHo and ΔCpo at 25oC for the reaction.
25 mL of 0.10 M HCl is mixed with 25 mL of .43 M NH3. What is the resulting pH?
Calculate DE, and determine whether the process is endothermic or exothermic for the following cases: A system releases 43 kJ of heat to the surroundings and has 665 kJ of work done on it by the surroundings.
The subsequent table gives the first ionization energies for the noble gas elements. Utilizing electron configurations, Define why the first ionization energy decreases with increasing atomic number.
Iron pyrite, commonly known as "fool's gold," is 46.5% Fe and 53.5% S. A crystal of iron pyrite contains 4.24g of iron. A) Calculate the mass in grams of the crystal. B) How many moles of iron is in the crystal
A liquid compound has a boiling point of 150degrees C. Unfortunately it is not thermally stable and decomposes at 110degreesC. how could this compound be distilled without decomposition
preparenbspa 350- to 700-word paper in which you explain the importance of chemistry in your life and in society.nbsp
Calcium nitrate are mixed with 15.0 mL of 0.300 M potassium hydroxide, how many moles of calcium hydroxide will be expected to be made?
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