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3.5 curies of 18-F can are formed in a 2 hour irradiation of 18-O using 19MeV protons with 35 A beam current. Explain the half-life of 18-F is 16 minutes. It takes 132 minutes to label deoxyglucose to make the PET scanning reagent Fludeoxyglucose. Explain how many curies of radioactivity remain in the product?
Construct a model of 2-chlorobutane. Which carbon in the chain is a chiral center. What has highest priority. Lowest
A saturated solution of magnesium hydroxide in equilibrium with undissolved solid is prepared at 25 degree celcius. The pH of the solution is 11.03. Calculate the value of the Ksp
During the purification and recrystallization of a solid why can't you just remove the solvent by evaporation after filtering and decolorizing
What is the density (in grams per liter) of a gas mixture that contains 25.0% F2 and 75.0% He by volume at 768 mm Hg and 25.0 degrees C
What is partial pressure of O2 in atmospheres? What is the partial pressure of Ne in atmospheres?
The bonding in BF3 requires formation of hybrid orbitals on boron. If the molecule is oriented in the xy plane, what is the identity of the unfilled p orbital on boron.
Draw all steroisomers of pentane-1,2,3,4,5, pentaol using bold and hashed wedges. There should be two meso compunds and a pair of enantiomers.
How many grams of NO(g) can be formed from 3.0 moles of NH3(g) if there is sufficient O2(g) to use all of the ammonia?
consider a reaction in which ferric oxide is converted to iron and gaseous oxygen. if this reaction is only 83
Unfortunately, the airbag explodes and your colleagues laugh at your inability to account for non-ideal or real gas behavior (van der waal). Which correction, attractive forces or molecular volume, is primarily responsible for your air bag blowing..
What functional groups can you identify within the coumpounds; dioxin, Furan, Hexachlorobenzene, what structural features
a 0.1946 g piece of magnesium metal is burned in a constant volume calorimeter that has a heat capacity of 1349 jdegc.
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