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Monday, 11 July 2011
Balance the ionic equation by half reaction method O3+ Br- -------> O2 + BrO-
Sunday, 10 July 2011
how many grams are in 1.8 x 10^23 atoms of silver
What is the molarity of pure water at 20 C?
What is the final pH after 1 drop (0.05 mL) of 6 M HCI is added to 1.0 L of freshly prepared pure water that was originally at a pH of 7.0. Is there a significant pH change?
what is the approximate expected pH of a 0.030 M HNO3 solution?
A 0.2602 g sample of an unknown monoprotic acid requires 12.23 mL of 0.1298 M NaOH solution to reach the end point. what is the molecular mass of the acid?
10.00 mL of vinegar (mass=10.05 g) requires 14.77 mL of 0.4926 M NaOH to reach the end point. Calculate the molarity and mass percent of the acetic acid in the vinegar.
Q-The titration of 10.00 mL of a diprotic acid solution of unknown concentration requires 21.37 mL of a 0.1432 M NaOH solution. What is the concentration of the diprotic acid solution?
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