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 The titration of 80.0 mL of an unknown concentration H3PO4 solution requires 126 mL of 0.218 M KOH solution.  What is the concentration of the H3PO4 solution (in M)?               H3PO4 (aq) + 3KOH (aq)   → K3PO4 (aq) +  3H2O (l)

What are the possible values of l if n = 6?

One of the integrals below cannot be evaluated using substitution, but can be found with algebraic manipulation. Which one is it?

Each of the following sets of quantum numbers is supposed to specify an orbital.  Choose the one set of quantum numbers that does not contain an error.  

Determine the element that is oxidized in the following reaction.    2 Li(s) + Fe(C2H3O2)2(aq)  → 2 LiC2H3O2(aq) + Fe(s)

The molarity of a solution prepared by diluting 43.72 mL of 5.005 M aqueous K2Cr2O7 to 500. mL is ________.

When the equation, ___N2 + ___H2 → ___NH3 is balanced, the coefficient of hydrogen is:

Evaluate the improper integral:

A company has profits of $[p],000 this year and expects profits to decrease by [d]% per year over the next [T] years. If the profits will be continuously invested in an account bearing [r]% APR compounded continuously, what is the [T]-year present value of this income stream?    Round your answer to two decimal places. 

A company has profits of $[p],000 this year and expects profits to decrease by $[d]00 dollars per year over the next [T] years. If the profits will be continuously invested in an account bearing [r]% APR compounded continuously, what is the [T]-year present value of this income stream?    Round your answer to two decimal places.