A chemist must prepare 250.0 mL of nitric acid solution with a pH of 1.40 at 25 "C. He will do this in three steps: • Fill 250.0 ml volumetric flask about halfway with distilled water. • Measure out a small volume of concentrated (9.0M) stock nitric acid solution and add it to the flask. • Fill the flask to the mark with distilled water. Calculate the volume of concentrated nitric acid that the chemist must measure out in the second step. Round your answer to 2 significant digits.

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.