Chapter 2: Atoms, Ions, and the Periodic Table
A) 12.01 amu B) 24.02 amu C) 240.2 amu D) 2402 amu E) 16.65 amu. Ans: D. 73. To the correct number of significant figures, the mass of exactly 400 atoms of magnesium is: A) 24.31 amu B) 9724 amu C) 97.24 amu D) 16.45 amu E) 0.06078 amu. Ans: B. 74. When comparing 1000 amu of carbon atoms with 1000 amu of helium atoms: ................
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