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Ralph Chase plans to sell a piece of property for \$180000. He wants the money to be paid off in two waysminus−a short-term note at 12% interest and a long-term note at 9% interest. Find the amount...

Determine the molarity of a solution of concentrated nitric acid. Concentrated nitric acid is 70% by mass HNO3. The density of concentrated nitric acid is 1.42 g/ml

Could anyone help me with this question? Thanks!   Suppose you have a solution that contains 100 μg/mL of a substance in 500 μL. You wish to dilute this so that you have 50 μg/mL in 1...

Sulphuric acid is sold in standard stock solutions of concentration 14.5 M. A teacher needs to prepare 175 ml of 2.3 M solution of sulphuric acid.

if the original concentration of alminium hydroxide is 7.5•10^-4 mol/L

I was playing around with tan(4*arctan(x))=2 and noticed x^2-x-1 and x^4-5*x^2+5 were in the solutions. It just seemed strange to me. Do identities work on these? Why is it adding/subtracting...

A student prepares a 250 ml of 1.35 M solution of magnesium chloride for an experiment. His lab partner accidentally dilutes the solution with an additional 125 ml of water