Explain the half-life in minutes of substance a

Assignment Help Chemistry
Reference no: EM13545474

An isomerisation reaction of a substance, A, to form substance B is first order. In a laboratory class one student group found that 26.6% of A had isomerised after a period of 15.0 minutes when the temperature was maintained at 84.5 °C. What is the half-life in minutes of substance A at that temperature?

Reference no: EM13545474

Questions Cloud

State the element or compound without a doubt : How do scientists know what is the composition of something. i.e. when they mention that "oxygen was obtained" how can they identify the element or compound without a doubt
State the formula of the compound sodium and iodine : Write the formula of the compound that would be formed between these two elements: sodium and iodine; hydrogen and sulfur; aluminum and selenium.
Evaluate the concentration of iodate ions : Calculate the concentration of iodate ions in a saturated solution of lead(II) iodate if Ksp = 2.6 × 10-13.
What is the mass of water at the end : A 150-g block of ice at 0°C is placed in an insulated thermos containing 568 g of water at 29°C. What is the mass of water at the end
Explain the half-life in minutes of substance a : In a laboratory class one student group found that 26.6% of A had isomerised after a period of 15.0 minutes when the temperature was maintained at 84.5 °C. What is the half-life in minutes of substance A at that temperature
State what is the value in min-1 of the rate constant : The decomposition of a compound, A, to form B + C is known to be a first order reaction. If the half-life of the reaction is 1.26 minutes at 65 °C, what is the value in min-1 of the rate constant for the reaction at this temperature
Find the mass of the necklace : A 0.34 kg meterstick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 9.5 cm toward that end. find the mass of the necklace
Explain the rate constant under any circumstances : A chemical reaction has been the subject of intense study, and a rate law, rate = k[A][B]2, was developed which summarised the mechanistic findings. Which one of the following changes to the system will not cause an increase in the rate constant u..
Calculate its speed when it is farthest from the sun : A comet moves about the Sun in an elliptical orbit, with its closest approach to the Sun being about 0.570 AU and its greatest distance from the sun being 41.5 AU (1 AU = the Earth-Sun distance). What is its speed when it is farthest from the Sun

Reviews

Write a Review

Chemistry Questions & Answers

  Explain the ksp values of cdco3 and ag2cro4

Equal volumes of 1 x 10-4 M solutions of Cd2+ and CO32- ions are mixed in one flask and equal volumes of 1 x 10-4 M solutions of Ag+ and CrO42- ions are mixed in a second. Which substances precipitate given that the Ksp values of CdCO3 and Ag2CrO4..

  Mark on the neck of the flask was reached

A 45.0-rm mL sample of this glucose solution was diluted to 0.500 rm L. How many grams of glucose are in 100. rm mL of the final solution?

  State a student wants to prepare a dilute solution of iron

A student wants to prepare a dilute solution of iron (III) solution, . The student is provided with a stock solution of 0.800 +/- 0.001 M and a 100.00 +/- 0.008 mL volume trick flask since the experiment trquires about 80 mL of the dilute iron (II..

  Explain and identifying an unknown liquid and precipitate

Identifying An Unknown Liquid And Precipitate. A high-boiling bp = 202 - 204 degrees C, burns with a yellow, sooty flame. Sodium fusion indicates that halogens, nitrogen and sulfur are not present. It is not soluble in water, dilute sodium bicarbo..

  Explain the equation for the reaction o khp and naoh

The equation for the reaction o KHP and NaOH shows ratio 1:1 ratio for the two reactants. Experimentally ,how do you know that base solution that you delivered from the burette had just as many moles as were in the KHPsample that you weighed out i..

  Explain a saturated na2co3 solution is prepared

A saturated Na2CO3 solution is prepared, and a small excess of solid is present (white pile in beaker). A seed cdrystal of Na2 14CO3 (14C is a radioactive isotope of 12C) is added (small red piece), and the radioactivity is measured over time

  Define what is the mass and the volume seawater

What is the mass, and the volume, of this seawater that contains 1.00 g of oxygen?

  Evaluate the nuclear binding energy per mole of nuclei

Calculate the nuclear binding energy per mole of nuclei of and the binding energy per mole of nucleons for 31P. The required masses (g/mol) are: 1 1H = 1.00783; 1 0n = 1.00867; 31 15P = 30.97376

  Determine the molarity of the solution

determine the final volume of the gas If the gas ocupied 68mL, initally and determine the molarity of the solution

  Explain the ph at the beginning of the titration

After completing the calculations below, sketch the pH curve for the titration of 20.0 mL of 0.200 M solution of a weak base, B (Kb = 1.9 x 10^-5), with 0.200 M HBr. Indicate the pH at (a) the beginning of the titration

  Explain iron (ii) ions are both oxidized and reduced

Aquated iron (II) ions undergo a disproportionation reaction to give Fe (s) and aquated iron (III) ions. That is, iron (II) ions are both oxidized and reduced in the same reaction

  What is the molar mass of the gas

an unknown gas has a density of 1.60 g/L at 1.00 atm and 30.5 degrees celsius what is the molar mass of the gas.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd