How many grams do 3.5e26 atoms of sodium weigh?

Answer in units of g.

2007-11-11 05:40:23 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

1 answers

6.022e23 mol-1 = Avogadro's constant.
22.98 = Na atomic mass.
So 6.022e23 atoms Na weigh 22.98 g,
so 1 atom Na weighs 22.98 /6.022e23 g,
so 3.5e26 atoms Na weighs (22.98/ 6.022e23) * 3.5e26 g.
(22.98 / 6.022) * 3500 = 13,356 g [ans].

2007-11-11 06:03:10 · answer #1 · answered by BB 7 · 0⤊ 0⤋

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