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In the mid 1990's a famous conservative pundit claimed that since chlorofluorocarbons are more dense than air, it is not possible for them to be present at high atmospheric elevations (in the ozone layer). Thus, they cannot play a role in the alleged photochemical destruction of stratospheric ozone. Using ILLUSTRATIVE EXAMPLES, highlight the strengths and weakness of his argument and comment on its overall validity.
A fishing boat accidentally spills 9 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 10^2 nm thick, how many square meters will the oil slick cover?
Select a suitable substance to be sealed within the vial. (b) Within less than 10% error, what magnitude of pressures must the vial withstand?
question what is the magnitude and sign of the molar heat of vaporization of butane? explain using hesss law. is your
the vapor pressure of chlorine dioxide clo2 is 155 torr at 22.75 c and 485 torrat 0c. what is the standard enthalpy of
The 13C nucleus is a spin 1/2 particle, which means it can orient in two directions in a magnetic field (with the field and against it). The difference in energy between the two orientations is given by:
What is the rate law for the reaction? Please show step by step solution.
Find the pH of a solution after 0.10 mol of HCl is added to 1.0 L of a buffer solution that contains 1.40 M NH3 and 0.90 M NH4+.
What is the ratio of HCO3- to H2CO3 in an exhausted marathon runner whose blood pH is 7.1? Note: There is no need to consider the Ka2, use only the Ka1.
What is the cell diagram for the spontaneous cell involving the Fe3+ | Fe2+ (0.771V) half cell and the Zn2+ | Zn (-0.763 V) half cell. a. What is the cell diagram. b. Write the net redox equation c. What is E°cell
crystallize in a cubic closest packed structure. Use the density of silver (10.5 g/cm3) and its molar mass (107.9 g/mol) to calculate an approximate atomic radius for silver
a student heated a .546 gram pure chemical in an atmosphere of oxygen gas until it had completely reacted the final chrominum compound weighed .798 grams what is the empirical formula of this compound?
Explain why can you conclude that the energy of an antibonding MO in (H2) + is elevate more than the energy of the bonding MO is lowered
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