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The two gaseous forms of elemental oxygen are O2 and O3. A mixture containing equal quantities of O2 and O3 is allowed to effuse down a capillary. What percent of the molecules effusing first would be O3?
a gas is placed in a storage tank a pressure of 30.0 atm 20.3oc as a safety device there is a small metal plug in the
Bromomethane is converted to methanol in an alkaline solution. The reaction is first order in each reactant.CH3Br(aq) + OH-(aq) ---> CH3OH(aq) + Br- (aq)
Consider the experiment where Cu is added to a solution acidic nitrate ion (look for a half reaction with nitrate). In the balanced equation, what is the coefficient in front of Cu
If it takes 50.0 mL of 0.0250 M K2Cr2O7 to titrate 30.0 mL of a solution containing Fe2+, what is the molar concentration of Fe2+?
If you have 4.26 g of caffeine dissolved in 94.6 mL of water and the extraction coefficient between H2O and CH2Cl2 is 21.51. How many grams of caffeine will extract into the CH22Cl2 layer if you use 59.9 mL
It takes 45.0J to raise the temperature of an 9.80g piece of unknown metal from 13.0C to 24.0 C. What is the specific heat for the metal
18.25 ml of 0.197 M NaOH will neutralize 10.00 ml of what molar concentration of H2SO4 solution?
In molecular orbital theory: 1. What is a bonding orbital and how does it impact the strength of a bond? 2. What is an antibonding orbital and how does it impact the strength of a bond
If the cell potential for a voltaic cell is 0.250 V, and the reduction potential for the oxidation reaction is ?0.150 V, what is the reduction potential for the reaction occurring at the cathode
Why is a vapor unlikely to behave as an ideal gas near temperature at which vapor would liquefy?
Given the following pKa values, draw the dipeptide at pH7. Clearly show and explain the charges in this molecule. (pka values 2.3 for -COOH, 9.6 for -NH2 group, 10 for tyrosine side chain and 9.0 for serine side chain)
What is the half-life (in years) of 44Ti if a 1.0 ng sample decays initially at a rate of 4.8*10^3 disintegration s/s
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