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The following data represent the number of years patients survived after being diagnosed with terminal cancer:0.4, 0.5, 0.6, 0.6, 0.6, 0.8, 0.8, 0.9, 0.9, 0.9,1.2, 1.2, 1.3, 1.4, 2.1, 2.4, 2.5, 4.0, 4.5, 4.6(i) Construct a stem-and-leaf display (ii) Supposedly you are inserting the above stem-and-leaf display in a report to be submitted to management, write a short comment on the diagram.
Calculate the wavelength () of the light in nanometers () corresponding to the energy change () value of this transition. You can use the following values for your calculations
The system then re-equilibrates. The appropriate chemical equation is PCl3+Cl2PCl5. Calculate the new partial pressures after equilibrium is re-established
A 3.77g sample of oxalic acid (H2C2O4x2H2O) was dissolved in enough water to make 1000 mL of solution. Then 17.15mL of this oxalic acid solution was titrated to the end point with 22.05mL of an unknown sodium hydroxide soloution.
a a general formula for gasoline is c7h13 . calculate the air to gasoline mass ratio required for stoichiometric
Write a complete stepwise mechanism for the reaction of cyclopentanone with bromine in acetic acid to give 2-bromocyclopentanone. Show all intermediate structures and all electron flow with arrows.
if a 60 w light bulb at 120 v is left on in your house to prevent burglary and the power company charges 10 cents per
What would be the expected Freezing Point and Boiling Point of a solution of 245gm of glucose added to 675 ml of water with a final volume of 710ml
Why would you put a metal sample in a test tube and then in boiling water to heat it instead of putting the metal sample directly in the boiling water
What happens when you mix controlled amounts of these with each other? Does the order of mixing matter? Create a prediction table to show what happens when solutions are mixed. What is maximum # of mixes needed to determine identities of four solu..
Calculate the concentration of Cu in the chloroform phase if 39 mL of a 0.28 M aqueous Cu solution buffered to pH 4 is equilibrated with 12 mL of chloroform.
calcium carbonate fw 100.09 reacts with hydrofluoric acid hf to form caf2caco3s 2 hf ------gt caf2s h2ol
Problem- If a buffer solution is 0.110 M in a weak acid (Ka = 2.6 *10^-5) and 0.480 M in its conjugate base, what is the pH
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