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How many picomoles per microliter of single-stranded DNA are in a 300 ug/mL sample with 1000 base pairs?
Determine the electron geometry, molecular geometry, and idealized bond angles for each of the following molecules. CF4
What is the [OH-] of 109.7 mL of a buffer initially consisting of .1572 M C2H5NH2 and .0904 M after the addition of .0030 moles of HCl. Kb of C2H5NH2 = 5.6e-4
What is the expected molar solubility of silver phosphate, Ag3PO4 in water? B) What is the expected molar solubility, in ppt (parts per thousand), of lead(II) iodide, PbI2 in water
A piece of sodium metal reacts completely with water as follows. 2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g) The hydrogen gas generated is collected over water
Sketch the shape of the pH curve you would obtain for this titration, and label all characteristic features of the graph.
The presence of the radioactive gas radon (Rn) in well water obtained from aquifers that lie in rock deposits presents a possible health hazard in parts of the United States.
calculate by explicit summation the vibrational partitionfunction and the vibrational contribution to the molar
Compare the orbital electronic configuration for K and Rb (s block), Hf and Zr (d block), F and Cl (p block). For each element, which ionic configuration should be the most stable?
When compound A is treated with AgNO3(aq), no reaction occurs, whereas compound B reacts with AgNO3(aq) to form a white precipitate.When compound A is treated with BaCl2(aq), a white precipitate is formed, whereas compound B has no reaction with B..
The simplest formula of a substance is found to be CH2O, and its approximate molar mass is found by experiment to be 93 g•mol-1. What is its exact molar mass?
Draw the major organic product formed in the following reaction. (The reaction stoichiometry is 1 mol reactant: 1 mol Br2.)
what was the delta t for the metal? c) how much heat flowed into the water? d) taking the specific heat of water to be 4.18J/gC, calculate the specific heat of the metal e) what is the approximate molar mass of the metal using the equation MM=25/S..
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