Explain molina hypothesized that chlorofluorocarbons

Assignment Help Chemistry
Reference no: EM13278117

The 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. 1. ClO + O3 -> Cl + 2O2 DeltaH of rxn = -122.8 kJ 2. 2O3 -> 3O2 DeltaH of rxn= -285.3 kJ 3. O3 + Cl -> ClO + O2 DeltaH of rxn = ?

Reference no: EM13278117

Questions Cloud

What is the length of a call if only 1% of all calls are : When a customer places an order with Office Works, a computerised Accounting Information System (AIS) automatically checks to see if the customer has exceeded his or her credit limit. Past records indicate that the probability of customers exceeding ..
Study of the demographics of game : William was immediately assigned to work with Timothy, a recent MBA graduate, on a major assignment for a new client, a company that created electronic games and sold them worldwide.
Explain re-establish equilibrium conditions : re-establish equilibrium conditions as described: The pressure if the system is increased by decreasing the total volume. a) shift to the left b)shift to the right c) no change
Calculate speed of operation at 4 values of the frequency : A 3 phase, 60 Hz, 4 pole, 440-v (line-line, rms) induction motor drive has a full-load (rated) speed of 1746 rpm. The rated torque is 40Nm. Keeping the air gap flux-density peak constant at its rated value
Explain molina hypothesized that chlorofluorocarbons : Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine a..
Determine what are idss and vp for the fet : A p-channel JFET operating at VSG = 0 is connected in series with a power supply V and a resistor R = 10 k. Ithas been found that for V 12 V the voltage across R is constant at 10 V. What are IDSS and VP for this FET
Explain what volume of naoh should the missing equivalence : In the fumaric acid titration, at what volume of NaOH should the missing equivalence point show up
Determine the closed loop bandwidth of a compensated opamp : A compensated op-amp has an open loop low frequency gain of 10^5 and an open loop -3db frequency of 10 Hz. If an inverting amplifier with a closed loop low frequency gain of 100 uses this op-amp, determine the closed loop bandwidth.
What is minimum clock period required for state machine : For a state machine, suppose the propagation and contamination delays of the next state circuit are 20nsecs and 5nsec, respectively. For the registers to store the current state, the propagation delay, set-up time, and hold time are 4 nsec, 2nsec,..

Reviews

Write a Review

Chemistry Questions & Answers

  Explain the isothermal compressibility of graphite

The isothermal compressibility of graphite is 1.56 × 10-7 bar-1. At what pressure is density equal to density of diamond?

  Explain what mass of neon gas is required

If 0.00936 mol neon gas at a particular temperature and pressure occupies a volume of 210. mL, what volume would 0.00793 mol neon occupy under the same conditions? What mass of neon gas is required to fill a 4.44-L container to a pressure of 1.30 a..

  Question based on the river murray in south australia

How is it possible that hard water can also be very saline ie The River Murray in South Australia? If sodium is added to soften hard water, then wouldn't the presence of salt in hard water 'soften' the water naturally

  What is frequency of photons emitted by hydrogen atoms

what is the frequency of the photons emitted by hydrogen atoms when they undergo transistions from n=5 to n=3

  Compute the ka value for hx

A 0.021 mol sample of a weak acid, HX, is dissolved in 575 mL of water and titrated with 0.41 M NaOH. After 29 mL of the NaOH solution has been added, the overall pH = 6.074. Calculate the Ka value for HX.

  Explain the specific heat capacity of iron

Assuming that no heat is lost to the cup or the surroundings, what will the final temperature of the water be? The specific heat capacity of iron = 0.449 J/g°C and water = 4.18 J/g°C.

  Find out the number of moles of oxygen

Determine the number of moles of oxygen that would be needed to completely combust 0.0350 moles of benzene

  Determine how much ammonia would be formed

Determine how much Ammonia would be formed if 187 grams of calcium carbonate CaCO 3 are formed?

  Compute the freezing point and boiling point

A solution is made by dissolving 0.679 mol of nonelectrolyte solute in 871 g of benzene. Calculate the freezing point and boiling point of the solution.

  Explain endpoint was neutralized after the addition of base

An unknown amount of magnesium metal reacts with 100.0 mL 0f 0.100M aqueous hydrochloric acid. The final solution is acidic, and titrated to an endpoint using 0.150 M aqueous sodium hydroxide. The endpoint was neutralized after the addition of 16...

  Describe why this is based on the wavelength range

Describe why this is based on the wavelength range that is transmitted. What color would you see if you mixed the two solutions with ?max = 520 and ?max = 610?

  State atoms the molecular symmetry will decide the polarity

A molecule can be polar or nonpolar depending upon the nature of the bonds and the shape of the molecule. For a molecule that has different outer atoms the molecular symmetry will decide the polarity.

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