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You have a 1mM stock solution of Arsenic to treat culture cells in a liquid medium. You need to treat your cells with Arsenic such that it has a final concentration of 5nM once it has been added to the cells. You are given 1mL of cells, and you can only add 2uL of your reagent to your cells. What concentration should you dilute the stock to so that you only have to add 2uL of Arsenic to your 1mL of cells in order to have a 5nM concentration of Arsenic?
A gaseous mixture of O2 and N2 contains 40.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 625 mmHg ? Express you answer numerically in millimeters of mercury.
Why is it that benzylic and allylic carbons undergo Sn1/E1 reactions even if they are primary carbons
If we assume that the volume change is due entirely to the density change (that is, neglect thermal expansion of the ice/water), what is the difference between the enthalpy change and the energy change during the process? Is this a significant dif..
How many molecules of NH3 do you have when you have 2.6 moles of NH3. How many moles of water do you have when you have 1.12 x 10 26 molecules of water
Using the information given, write an expression which would give the solubility, S, as a function of the chloride ion concentration, [Cl-]. This means include all the equilibria.
Explain briefly why CuSO4 is more soluble in water than in organic (nonpolar) solvent.
a 45.0 g aluminum block initally at 28.0 celsius absorbs 825 joules of heat. what is the final temperature of the
determine the molarity of a solution formed by dissolving 15.79 grams of cacl2 calcium chloride in 200.grams of h2o
Suppose that 4387.0 J of heat energy is added to 8 g of ice initially at -11 C. (This could be done, for example, by electrical heating of ice in an insulated container.) What is the final temperature of the water
What are the two half-reactions that occur at the indicator electrode? Answer by adding charges, coefficients, and products to the following.
What mass (in grams) of solid sucrose (C12H22O11) would need to be added to 2000 grams of water to make an ideal solution with a boiling point of 102.9°C? (Kb for water is 0.512°C/m)
where the atmospheric pressure is 1.00 atm. The balloon rises to an altitude of 20,000 m, where the atmospheric pressure is 61 mmHg and the temperature is 210 K. What is the volume of the balloon at 20,000 m?
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