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75.0 mL of a solution(1.40 M) is diluted to a volume of 278 mL. A 139-mL portion of that solution is diluted using 111 mL of H2O. determine What is the final concentration?
A Normal salt, XY, with molar mass =249 g/mol , solubility =2.70 g/L at temperature of 25 degrees Celsius. Calculate what is the Ksp of this salt at temperature of 25 degrees Celsius?
Application of ideal gas law - How high can you raise the temperature of the gas without bursting the vessel?
What substance is in excess? D) How many grams of the excess reactant is leftover (remaining) after the reaction stops
Which graduated cylinder would have the greatest volume change if equal masses of Au and Pt are transferred to equal volumes of H2O in separate graduated cylinders? Density of gold = 19.31 g/cm3 , density of platinum =21.43 g/cm3
Find out the formula of the gas produced if Na 3 P(s) sodium phosphide, is reacted with H 2 O
Pyridine(C5H5N) is a weaker base in H2O than 2,6 lutidine (dimethylpyridine), but we observe that the pyridine-BF3 complex is more stable than the comparable lutidine-BF3. Explain the reason for this inversion in stabilities.
Identifying and balancing the different types of chemical reactions. Evaluate which processes represent chemical reactions.
Write the electronic configuration in sublevels for the following atoms
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
Compare alkalide ion with the neutral alkali atom - For a given alkali metal, how does the ionic radius of the alkalide ion compare to that of the neutral alkali metal atom? Explain using physical arguments.
Calculate the number of 5.70m NaOH must be added to 666 ml of a buffer that contains .0205m C2H4O2 and .0260m C2H3NaO2 to increase the ph to 5.75.
Calculate the molecule weight of the liquid If 2.31grams of the vapor of a volatile liquid is able to fill a 498-ml flask at temperature of 100 degree Celsius and pressure of 775 mm Hg? also determine the density of the vapor under these conditi..
What volume of 0.140 M Hydrochloric acid is required to neutralize 2.68g of Magnesium hydroxide.
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