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Problem- A solution is made by mixing 36.0 mL of ethanol, C2H6O, and 64.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C?
I need proficient help to solve the above problem
what mass of MgNH4PO4 precipitated when 200 mL of 1%(w/v) solution of MgCl2 were treated with 40 mL of 0.1753 M Na3PO4 and excess of NH4+ what was the molarity of the excess reagent (Na3PO4 or MgCl2) after the precipitation was complete
why is it important to immediately cover the Mg ribbon with the other slab of dry ice once it starts burning?
As a technician in a large pharmaceutical research firm, you need to produce 350.mL of 1.00 M potassium phosphate buffer solution of pH = 6.87. The pKa of H2PO4- is 7.21.
why was the titration performed by the addition of permanganate solution to oxalate solution and not the other way
A stock solution is prepared by adding 15 mL of 2.5 M Ba(CN)2 to enough water to make 23 mL. What is the CN- concentration of 10 mL of the stock solution?
in what form does bh3 ordinarilyexist? give the name molecular formula and structureof this substance. b write
Calculate the concentration of Na+ ions (in mol/L) for each of the following. a) A 41.0 mL sample of 2.0 M Na3PO4 which has been diluted to 300.0 mL b) 8.50 g Na2CO3•5H2O(s) is made up in a total volume of 3.50 L
A molecule of glucose contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. Which is the correct formula.(a) 6CH20 (b) (CH2O)6 (c) C6H12O6 (d) C6(H2O)6
The procedure calls for 120 mg of 4-aminobenzoic acid, and 2.0 mL of absolute ethanol. If you used 131 mg of 4-aminobenzoic acid, and exactly 1.81 mL of absolute ethanol, what would be the ratio of moles of ethanol to moles of 4-aminobenzoic acid
Problem- A 35.00mL solution of .2500 M HF is titrated with a standardized .1627 M solution of NaOH at 25 degrees C. 1) What is the pH at 0.50mL before the equivalence point
It takes 51.0 J to raise the temperature of an 11.0 g piece of unknown metal from 13.0 degrees celcius to 24.0degrees celcius What is the specific heat for the metal? Express your answer numerically, in Joules/gram Degrees celcius
The following reaction takes place in a sealed 40.0-L container at a temp of 120 degrees C 4NH 3(G) + 5 O2 (g) --> 4NO (g) + 6H2O (G)
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