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What is a mole? How is it used to help express the behavior/reactions of elements and molecules in reactions?
A solution of 48.6% H2SO4 by mass has a density of 1.39 g/cm3 at 293 K. A 23.2 cm3 sample of this solution is mixed with enough water to increase the volume of the solution to 99.8 cm3. Find the molarity of sulfuric acid in the obtained solution.
Compute the equilibrium concentrations of each ion in the final solution resulting from the mixing of 40.00mL of 0.0450 M MgI2 and 60.00mL of
ephedrine is used as a bronchodilator and decongestant. phenobarbital is used as an anticonvulsant and sedative. what simple chemical test distinguishes these 2 medicines?
Three isotopes of argon occur in nature - 36Ar, 38Ar, 40Ar. Calculate the average atomic mass of argon to two decimal places, given the following relative atomic masses and the abundances of each of the isotopes: argon
Determine the equilibrium constant of a weak acid if you titrate 25.00 mL of the acid (diluted with 50.00 mL of water) with 1.00 M NaOH
a voltaic cell is constructed with a agag half-cell and a cdcd2 half-cell. the silver electrode is positive. write
a 0.6407g sample containing only chloride and iodide ions gave a silver precipitate weighing 0.4430g. this precipitate
Aluminum metal shavings (3.200g) are placed in 60.00 mL of (6.00 M hydrochloric acid. 1.00 L of hydrogen gas is collected in a buret over at 20 degress celsius and 1 atm. P(H2O)=17.5 torr.
the heat of combustion for a sample of coal is 23.0 kjg. how many grams of coal must be burned to heat 220.0 g of water
The acid-catalyzed addition of alcohols to alkenes occurs via a mechanism analogous to acid-catalyzed alkene hydration. The reaction occurs in 3 steps
Draw a structure for a compound that meets the following description: C4H8O with IR absorption at 3400 cm-1 and no absorption in the 1640-1680 cm-1 range
Which of the following equations represents the proper net ionic equation for the complete neutralization reaction between the strong base KOH (aq) and the weak acid HF (aq)
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