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Scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of the solution will be needed to produce 425ml of a solution that has a concentration of Na+ ions of 0.700 ?
A gaseous reaction occurs at a constant pressure of 30.0 atm and releases 58.0 kJ of heat. Before the reaction, the volume of the system was 9.00 L.
A 6.50 gram sample of an ore containing chromium is dissovled and then treated with an excess of Na3PO4 (aq), which precipitates out all of the chromium in the ore as chromium (III) phospate, CrPO4.
Calculate the pH of a buffer solution made by mixing 34 ml of a 0.11 M potassium acetate solution with 63 ml of a 0.10M acetic acid solution. Give the pH to two decimal places.
If 5.00 g Br2 and 1.10 g NH3 react according to the equation below, what is the maximum mass of ammonium bromide produced. 3 Br2() + 8 NH3(g) ® 6 NH4Br(s) + N2(g)
An unknown gas sample with a mass of 3.17 g and a volume of 0.7521 L at 293.0 K under 1.023 atm has CH2Cl for its empirical formula. What are its molar mass and its molecular formula?
Balanced chemical equation for the combustion of liquid ethanol c2h5oh, in oxygen, yielding gaseous carbon dioxide and water vapor.
the calculation supports the idea that thermal pollution around cooling vents of nuclear reactors is detrimental to marine life.
The Kd of methylene chloride/ water of an organic compound is 2.50 A solution is made my dissolving 48 mg of the compound in 10 ml of H2O. How many mg of the compound will be extracted using 10 ml of methylene chloride
Compute the pH of a solution made by mixing eighty grams of NaCH3COO, to 39 grams of CH3COOH, and adding in H2O to produce 500. mL of solution.
Explain the factors that lead to the third mode being such a poor group frequency. Predict the location in the spectrum of the third fundamental.
determine the volume of .450m napo4 is needed to precipitate all the leadii ions from 190.0ml of .550m leadii
Important information about pH and Molarity, You add 5 drops of .100 M HCl to 100ml of "pure" water. Assuming that the volume of one drop is .035ml, calculate the expected pH of the resulting solution
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