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0.506-kg chunk of ice at 0.0 degrees Celsius is added to an insulated container holding 315ml of water at 20.2 degrees Celsius. Will any ice remain after thermal equilibrium is established
what is the molar mass of a gaseous element that Effuses through an opening of a box 1.12 times as fast as argon at the same temperature.
Using the equation Fe2O3+2Al-->2Fe+Al2O3, how many grams of Al are needed to completely react with 135 g Fe2O3
A student prepared a stock solution by dissolving 20.0 grams of KOH in enough water to make 150 mL of solution. SHe then took 15.0 mL of the stock solution and diluted it with enough water to make 65.0 mL of a final solution. What is the concentra..
Explain possible reason for discrepency between the actual pH of the buffer and the reported pKa of the weak acid. (My case: actual pH =9.23, reported pKa =9.25)
If the decay of trihalomethane is first order,and 90% of the trihalomethanes in glass of tap water are gone after 3 hours, what is the decay rate constant
Electron affinity can be defined for molecules just as it is defined for single atoms. Write a complete chemical equation representing the electron affinity of OH. Include all relevant state symbols.
A solution of 5.36 g of a molecular compound dissolved in 76.8 g benzene (C6H6) and has a boiling point of 81.46oC. What is the molar mass of the compound
If 975g of copper is heated from 20 degrees C to 80 degrees C what amount of heat is absorbed?
Important information about Molar concentrations, Calculate the molar concentrations, I-, disulfur octaoxide, disulfur trioxide.
A 50.0 mL sample of vinegar (density = 1.06 g/mL) was diluted to 500.0 mL. Titration of a 50.0 mL aliquot of this solution required 42.5 mL of 0.0900 M NaOH to reach the end point. Determin the acid content of the vinegar as wt. % acetic acid.
The sodium hydroxide solution was prepared by dissolving 10.00 g of solid NaOH in sufficient water to form 200.00 mL of solution. If the equivalence point was reached after the addition of 23.50 mL of the NaOH solution, what is the molarity of HNO..
hfcs hydrofluorocarbons are replacing cfcs chlorofluorocarbons because the c-h and c-f bonds are stronger than c-cl
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