In the titration the student used 25.0 cm of sodium hydroxide. This volume reacted with exactly 20.0 cm' of 0.1 mol/dm of sulfuric acid solution.

The equation for the reaction is:
2NaOH + H2SO4 → Na2SO4 + 2H20||
What is the concentration in mol/dm' of the sodium hydroxide solution?

10-14. (a) when 100.0 ml of weak acid ha were titrated with 0.093 81 m naoh, 27.63 ml were required to reach the equivalence point. find the molarity of ha. (b) what is the formal concentration of a- at the equivalence point? (c) the ph at the equivalence point was 10.99. find pk. for ha. (d) what was the ph when only 19.47 ml of naoh had been added?

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.