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Phosgene (Cl2CO) is a poisonous gas that was used as a chemical weapon during world war 1 and is potential agent for chemical terrorism. Draw the Lewis dot structure of phosgene. Include all 3 resonance forms by alternating the double bond among the 3 terminal atoms. Which resonance structure is best?
A pstient is administered mercury-197 to help evaluate kidney fuction. Mercury-197 has a half - life of 65 hours. what fraction of an initial of an initial does of mercury
Half-life of first order process, A reactant undergoes a dissociation reaction A r arrow 2B which follows first order kinetics. The initial concentration of reactant A is .4000
Benzene, C6H6, is reacted with bromine, Br2, to produce bromobenzene, C6H5Br, and hydrogen bromide, HBr, as shown below. When 40.0 g of benzene are reacted with 95.0 g of bromine, 65.0 g of bromobenzene is produced.
What osmotic pressure in atmospheres would you expect for a solution of 0.140M CaCl2 that is separated from pure water by a semipermeable membrane at 310 K?
a pound of coffee beans yields 70 cups of coffee (4cups=1qt) how many milliliters of coffee can be obtained from 1 g of coffee beans
What is the pressure exerted by some nitrogen gas collected in a tube filled with water on a day when the room temperature is 18.0ºC
If the total volume of the jewelry is the sum of the volumes of the gold and silver that it contains, calculate the percentage of gold (by mass) in the jewelry.
Using as sample of gas of 12.0 moles are in a tank of 8.00 Litres at the temperature of 22.6 degree celsius. compute the difference in pressure between CH 4 and an ideal gas under these conditions
heat of solution of lithium carbonate is -3.06 kJ/mol solute in 200 moles H2O. What effect would you expect increased temperature to have on the concentration of Li2CO3? Explain
Assuming that the 3s- and 3p-orbitals will form molecular orbitals similar to those formed when 2s- and 2p-orbitals interact, according to molecular orbital theory
A 10.00 mL sample of the resulting solution is transferred into an Erlenmeyer flask for a titration. How many grams of baking soda are present in the 10.00 mL sample?
Caffeine is made up of 49.5% C, 5.2% H, 16.5%O, and 28.9% N. A solution made up of 8.25g of caffeine and 100.0 of benzene (d=0.887g/ml) freezes at 3.03C.
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