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It is estimated that 17.4% of all U.S. households own a Roth IRA. The American Association of University Professors believes this figure is higher among its members and commissions a study. If 150 out of a sample of 750 AAUP members own Roth IRAs, is this sufficient evidence to support the claim of the AAUP?
An experiment requires 42.5 g of sulfuric acid, which is easier to measure by volume than by mass. What volume in mL should be measured out, if the density of the sulfuric acid is 1.84 g/cm^3
what is the mechanism of how sodium hydroxide reacts with ester (lard) to form cardoxylic acid soap
Calculate the maximum concentration of fluoride ion that could be present in hard water. Assume the only anion present that will precipitate is the calcium ion. (CaF2(s) Ksp,25C=4.0x10^-11)
What volume of hydrogen at STP is produced by dissolving 13.49 g of aluminum in excess sulfuric acid? A. 11.2 L B. 14.9 L C. 16.8 L D. 22.4 L
The energy from condensing steam water is used to melt ice at 0 degrees Celsius. How much ice can be melted by condensing 1.0 kg of H2O vapor? (Delta H fus of ice= 6.01 kj/mol) (Delta H vap of water = 40.7 kj/mol)
When 1.543 g of copper(II) sulfate pentahydrate is heated to drive off the water of hydration, how many grams of copper(II) sulfate and water are formed?
Problem- Given that P*(H2O)=0.02308 atm and P(H2O)=0.02171 atm in a solution in which 0.207 kg of a non-volatile solute(M=298g/mol)is dissolved in 0.892kg water at 293K, calculate the activity of and activity coefficient of water in the solution
Name one physiologic isotonic solution. Be sure to include the concentration of the isotonic solution as part of your answer.
A 1.000L solution is prepared in which Au+,Ag+,and Cu+ ions are present in solution as nitrates all at a concentration of .001M a solution of sodium chloride is slowly added. which compound will begin to precipitate first the ksp
Explain what is the silver ion concentration in a solution prepared by mixing 437mL of 0.364 M silver nitrate with 457mL of 0.436 M sodium chromate. The Ksp of silver chromate is 1.2 × 10-12
Provide step-by-step mechanism for the rxn (1S,2R)-2-methylcyclopentanol with 85% H3PO4 at 170 degrees C.
a sample of gas contains 50.0 helium and 50.0 xenon by mass. what are the partial pressures of each gas when the total
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