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Explain why tetrachloethylene is widely used for dry cleaning of fabrics and as a paint stripper.would you expect it to remove grease stains? And if so why?
how many grams of solute are in the solution 498 mL of a.850 M Na2So4?
In a calibration of a calorimeter, 50.0 g of water at 60.0 degrees C is added to 50.0 g of water at 20.0 degrees C to give a mixture 39 degrees C. What is the heat capacity of the calorimeter used in this experiment
What concentration of C2O42- is necessary to begin precipitation? (Neglect volume changes.) [C2O42-] = M. (b) Which cation precipitates first? Cd2+ Ag+ (c) What is the concentration of C2O42- when the second cation begins to precipitate? [C2O42-] ..
Radiation therapy. An effective treatment for some can cancerous tumors involve irradiation with fast neutrons. The neutrons from one treatment source have an average velocity of 3.2 X10-7 m/s.
Na2SO3, to the calorimeter above that contains 20.00g of water at 23.15 degrees C, what will the final temp of the calorimeter be when the reaction gose to completion
if the hindenburg held 2.0 times 10^5 m^3 of hydrogen gas at 23 degrees C and 1.0 atm, what mass of hydrogen was present
A: 2-methyl-1-bromohexane B: 1-bromohexane which of the above compounds will react the fastest with NaI in acetone?
Ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. From 164.5 degrees C to 179 degrees C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction
a state government is considering construction of a flood control dike having a life span of 18 years. history
A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. The researcher will then compare the scores for the two treatments.
If 1.00 g of an unknown molecular compound contains 8.35 x1021 molecules, what is its molar mass
Use the balanced equation to calculate how many mL of 0.15M KOH solution will be needed to completely react with 15.0 mL of a 0.20M H2SO4 solution
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