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You want to load 15ug of protein in 10uL into one of the 12% polyacrylamide gel wells. The protein needs to be in 1X buffer and in a total volume of 0.100 mL. You are given a 5mg/mL protein solution, a 20X sample buffer, and distilled water. How much of each wuld you mix together to make the required volume?
Calculate the equilibrium value of Pb+2(aq) in 1.00 L of saturated PbCl2 solution to which 0.250 moles of NaCl(s) has been added. Assume that no volume change occurs.
If 122 mL of a 1.2 M glucose solution is diluted to 550.0 mL, what is the molarity of the diluted solution?
What is the percent yield of a reaction in which 260. g phosphorus trichloride reacts with excess water to form aqueous phosphorus acid (H3PO3) and 127 g HCl?
If 57.0 of solution is needed to precipitate all the sulfate ion in a 756 sample of , what is the molarity of the solution?
Lead thiocyanate, rm Pb(SCN)_2, has a K_sp value of 2.00 times 10^{-5}.Calculate the molar solubility of lead thiocyanate in 1.00 it M rm KSCN.
Subtract one from the other. In what direction do the functions point? What orbitals are "left" unused on the C atom?
Compute the enthalpy change for the dissolution of ammonium nitrate express your answers in units of kJ/mol.
Consider the following reaction: 2A + B → 3C + D If 63.0 mol A and 42.0 mol B react to form 54.0 mol C. What is the percent yield of this reaction.
When 6.6 g solid NaOH is dissolved in 30.0 g of water in a coffee cup calorimeter, the temperature rises from 25.5 to 36.1. How much heat is produced by the dissolution process? the specific heat is 4.184
A flask that can withstand an internal pressure of 2491 torr, but no more, is filled with a gas at 21.0°C and 758 torr and heated. At what temperature will it burst?
Cesium ions are added to flood the flame with electrons. It needs to be in a large concentration, larger than what is being measured.
How many protons, and how many neutrons are present in the nucleus of each isotope? What is the natural abundance of each isotope, if the average atomic mass of gallium is 69.72 u?
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