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Problem- For 1 hour average value, a city reports 0.19 ppm ozone. The permissible limit is 0.12 ppm ozone.
By what amount, in ppm, does the reported value exceed the permissible limit?
This exceeded amount is what percent of the permissible level?
Show all work, use additional paper if necessary.
You are given an unknown, colorless, solution that may contain only one salt from the following set: NaA, NaB, NaC. In solution each salt dissociates completely into the Na+ ion and the anion A-, B-, or C-. The Na+ ion is a spectator ion. Given th..
The analysis of a compound shows that it contains 20.0% H and 80.0% C. The empirical formula is:
Referring to the line representation, is the cell reaction spontaneus or non-spontaneous? Explain your answer.
calculate the pb2nbspat each of the following points in the titration of 20.00 ml of 0.0200m pb2nbspby 0.010 m edta at
Use the standard entropies values to calculate ?S° for the reaction 1. S° (J/mole-K): COCl2 (g) 283.7 H2O (l) 69.9 CO2 (g) 213.7 HCl (g) 186.8 1) COCl2 (g) + H2O(l) ?CO2(g) + 2HCl (g)
What are the proper names for each of the pieces of glassware commonly used in distillation. In distillation, how is a column different than a condenser? How is a fractionating column different than a plain column
Ozone is an air pollutant produced when nitrogen dioxide, NO2 , from automobile exhaust reactswith oxygen. The chemical equation for this reaction is NO2(g) + o2(g) ---> NO(g) + O3(g).
While the subsequent chemical reaction was at equilibrium the volume of the reaction vessel was decreased. Explain which way did the reaction shift if at all? I2(g) + Cl2(g) 2 ICl(g)
Describe how you would purify p-nitrobenzoic acid from a mixture of a 9.0 g of p-nitrobenzoic acid and 2.0 g of o-nitrobenzoic acid using recrystallization.
The following reaction is a single-step, bimolecular reaction: When the concentrations of CH3Br and NaOH are both 0.115 M, the rate of the reaction is 0.0010 M/s.
How much ice (in grams) would have to melt to lower the temperature of 352 mL of water from 24^\circ C to 4^\circ C? (Assume the density of water is 1.0
A chemist wants to make 5.5L of a 0.280M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use
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