If you remade your system of measurement, what would you change?why?

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Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

Which notation is used to represent an alpha particle? a. b. c. d.