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If the instantaneous initial rate of reaction is 0.000145 M/s, calculate the initial instantaneous rate of change of H2 concentration. In addition, explain the answer using words.
C2H2(g) + 2H2(g) -> C2H6(g)
A 0.0182g sample of an unknown substance was dissolved in 2.135 g of benzene. The molality of this solution determined by freezing point depression was .0698m. What is the molecular mass of the unknown substance
protonated benzoic acid in solution give the Henderson-Hassalbach equation and calculate pH
How much heat is required to convert 83 g of nitrogen gas to NO2 at constant temperature and pressure in the presence of excess oxygen
For the following reactants, predict the products formed (if any) and write the balanced molecular equation, complete ionic equation and net ionic equation. Ca(s)+ HCI(aq)
Determine the partial pressure and the total pressure using Dalton's law of partial pressures - Determine the total pressure of the mixture.
Choose the most likely pattern for the crystal field diagram for the complex trans-[Ni(NH3)2(CN)4]2-, where CN- produces a much stronger crystal field than does NH3.
Foruntantely, this toxin decomposes to a safe mixture of products by first-order kinetics with a rate of .27 days^-1. How long will it take for the water to be safe to drink
If a chemist wishes to prepare a buffer that will be effective at a pH of 5.0 and 25C, which of the following would be the best choice for the acid component and WHY
Given 217 mL of a buffer solution that is 0.46 M formic acid and 0.27 M sodium formate, calculate the pH of this solution after the addition of 2.8 mL of 6.3 M hydrochloric acid. The Ka of formic acid is 1.8x10-4
the reactant concentration in a zero-order reaction was 6.00times10-2 it m after 185 s and 1.00times10-2 it m after 330
An open container holds 0.550 kg of ice at - 15.0 degree celsius. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 800 J/min for 500 min.
A sample of neon gas has a volume of 282 mL AT 160 degrees celsius. The sample is cooled at constant pressure to a volume of 685 mL. What is its new temperature?
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