Biết khối lượng tuyệt đối của nguyên tử natri là 38,1643.10−27 kg. Nguyên tử khối của natri (tính theo u) là giá trị nào sau đây? A. 11 u B. 22,98 u C. 12 u D. 23 u.

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?

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