What is the percent abundance of each isotope
Silver has two stable isotopes with masses of 106.90509 amu and 108.9047 amu. The average molar mass of silver is 107.868 amu. What is the percent abundance of each isotope?
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Devise a reaction scheme to make ethanol from propanoic acid. Several steps may be required. For each reaction include any reagents/catalysts and reaction conditions.
The concentrations of each were then determined as follows: [Fe^3+]= 6.8 x 10 ^-4 M, [SCN ^-]= 3.3 x 10 ^-4 M, [FeSCN ^2+]= 3.0 X 10 ^-5 M. Determine the equilibrium constant for this reaction.
Which of the following combinations of quantum numbers are allowed? A) n=4, I=2, mi=1, ms= -1/2 B) n=2, I=2, mi=2, ms= 1/2 C) n=1, I=0, mi=1, ms= 1/2 D) n=4, I=1, mi=1, ms = 1/2
Calculate the hydroxide ion concentration in a solution that is 0.068 M morphine C17H19O3N and 0.045 M morphine hydrochloride C17H20O3NCl. Kb of C17H19O3N is 1.6 x 10^-6
A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g.
What volume (L) of 0.378 M potassium hydroxide solution would just neutralize 80.3 ml of 0.165 M H2SO4 solution
One binkle is defined as being exactly 3 × 10^12. A) If you had 1.0 kg of nails and 1.0 kg of helium atoms, would you expect them to have the same number of binkles? Using complete sentences
Examine the Lewis structure of methylene blue and explain why it is a cation instead of a neutral species. Where would the extra electron otherwise reside
The student then titrates the oxalic acid solution with her sodium hydroxide solution. When the titration reaches the equivalence point, the student finds she has used 0.1265 L of sodium hydroxide solution. Calculate the molarity of the student's
Calculate the surface area. if the sphere is broken Into eight spheres, each having a volume of 1.25 centimeter cubed, what is the total surface area of the spheres?
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