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A .1075 g sample of an unknown acid was titrated with a .09441 M NaOH solution. The end point was reached at 20.67 mL of base. Find molar mass if: monoprotic, diprotic, triprotic.
draw the lewis dot structures for ammonia and for the ammonium ion. write the net ionic equation for the conversion of
Calculate the pH during the titration of 29 mL of 0.2 M HNO3(aq) with 0.15 M NaOH after 10 mL of the base
A flask containing a mixture of compounds A and B are decomposed by first-order kinetics. The half-lives are 45 min for 15 min for A and B. If concentrations at the beginning of A and B are equal, how long will it take for the concentration of A t..
a 1.60 g sample of a large biomolecule a nonelectrolyte was dissolved in 18.0 g of carbon tetrachloride. the boiling
at stp air can be considered to be a mixture of ideal gases 21.0 o2 78.0 n2 and 1.00 ar by volume. a. calculate the
You determine the absorbance of a solution to be 0.355 when the concentration of the absorbing ion is 3.5 x 10-5 M. What is the molar absorption (extinction) coefficient of the ion
Determine which monomer will have the higher degree of polymerization (DP) and by how much?
Calculate the Ecell for the reaction below when [Zn2+] = 1.00M, [H+] = 1.00 x 10-6 M and PH2 = 1.00 atm Zn (s) + 2H+ ----> Zn2+ + H2 (g) a.+0.76 V b. + 0.64 V c. + 0.41V d. + 0.053 V e. + 1.12 V
After the reaction was complete, the solid residue, consisting of KNO2 and the original impurities, had a mass of 24.1 g. Assuming that only the potassium nitrate had decomposed, how many grams of KNO3 were present in the original sample? Answer i..
Devising a Reduction Potential Table, Why was it necessary to do Step 3 of the Laboratory Investigations. For the cell wilt the largest cell potential, place the metal of one half-cell in the solution of the other half-cell.)
a-Calculate [OH-] of a 2.25×10^-1 M aqueous solution of hydroxylamine (HONH2, Kb = 1.1×10^-8).? part b-Calculate the pH of the above solution. pls show the step wise answer since i'm struggling with chem. (the full answer) to get the full rate:)
An aqueous solution of an acid HX has a pH of 5.34,what is the value of Ka for HX and calculate the percentage dissociation of HX in the solution
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