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The nuclear mass of 141Ba is 140.883 amu. Calculate the binding energy per nucleon for 141Ba.
A 50.0 ml sample of 0.100 M HClO4 is titrated with 20.0 ml of 0.200 M NaOH. What is the pH of the resulting solution
The absorbance of the solution was 0.685 at 415nm and 0.513 at 455nm. What were the percentages of titanium and vanadium in the alloy?
Consider the reaction CaCN2 + 3 H2O → CaCO3 + 2 NH3 . How much CaCO3 is produced if 47.5 moles NH3 are produced
In the laboratory a student finds that it takes 96.8 Joules to increase the temperature of 14.3 grams of solid diamond from 24.0 to 38.1 degrees Celsius.
When heated, the DNA double helix separates into two random-coil single strands. When cooled, the random coils form the double helix
Determine which of the following reactions are oxidation-reduction reactions and which are not. what type of reaction do you have if it is not an oxidation-reduction reaction?
Which of the following molecules would be expected to be MOST water soluble?
Consider the reaction: 2N2O(g) O2(g) + 2N2(g). Which of the following will cause a shift in the equilibrium to the right? 1. Add more N2O 2. Remove O2 3. Remove N2
The volume of an ideal gas in a container is 2.0L. What will the volume of the gas be if the pressure on the container is doubled while the temperature is reduced from 400k to 200k?
If a formic acid/formate buffer is 0.031 M in formic acid and has a pH of 3.91, what is the molar concentration of the formate ion? The pKa of formic acid is 3.75.
What is the energy difference between the staggered and eclipsed conformations of 2,2,-dimethylpropane if the eclipsing cost of Me and H is 6 kJ/mol
In photosynthesis, plants form glucose and oxygen from carbon dioxide and water. calculate delta H, delta S and delta G of the reaction. Delta H is 2800.
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