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0.500 mol/L of MgSO4. What is the concentration of this solution when expressed in percent (mass/volume)? a)0.602% b)0.415% c)602% d)0.000415% e)none of the above
What molar ratio of acetic acid to sodium acetate is required to create a buffer solution having a pH of 4.84 at 25°C
the label on an aerosol spray can contains a warning that the can should not be heated to over 130degf because of the
The final temp of the water is 30.8 C. Calculate the mass of water in calorimeter
The average C--H bond energy in CH4 is 415 kJ/mol. Use the following data to calculate the average C--H bond energy in ethane (C2H6; C--C bond), in ethene (C2H4; C=C bond), and ethyne (C2H2; C (triple bond) C).
A mixture is made from 100ml of 0.1M Mg2+ ions and 300ml of 0.1M F- ions. A precipitate forms. Determine the concentration of each ion in solution given that Ksp of MgF2 is 3.7×10-8.
Calculate the mole ratio of iron used to copper produced. Express this ratio as a simple whole-number ratio.
If Ka is 1.85 x 10-5 for acetic acid, what is the pH of the solution at the equivalence point during a titration of 50.0 mL of 0.100 M acetic acid with 0.100 M NaOH
The endpoint in the titration is "overshot" A. is the reported molar concentration of the hydrochloric acid solution too high or too low. B. As a result of this poor titration technique, is the reported number of moles of B4O5(OH)4^2 would be too ..
In a gas mixture, the partial pressures are nitrogen 430 , oxygen 115 , and helium 235 . What is the total pressure ( ) exerted by the gas mixture?
If 5.36 103 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
What is the final concentration of the solution made by diluting 4.0 mL of 0.0025M Fe(NO3)3 to a final volume of 10.0 mL
the presence of other metal ions from the dissolved brass interfere with the determination of copper in this experiment?
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