During the phosphatase experiment you will use several different ph buffers. the ph value depends upon combing various ratios of 0.1m citric acid and 0.2m sodium phosphate dibasic (na2hpo4, m. w. = 142 g/mole). describe how you would make 300 ml of 0.2m sodium phosphate dibasic given a 500g bottle of na2hpo4. include the type and sizes of any measuring vessels that you use to make the solution.

Identify which properties could correspond to solids, plasmas, or both. maintain a unique shape. collide infrequently with other particles. have very high velocities. conduct electricity. protons. have a low temperature. has long-range order.

Which of these conditions most likely produces an unstable isotope?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.