Answered

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How many moles of aluminum do 6.4×1024 aluminum atoms represent?

Sagot :

CrystalQueen

Answer:

11 moles Al

Explanation:

To find the amount of moles, you need to use Avogadro's number to convert the atoms to moles. Since the value you were given has 2 significant figures, the final answer should also have 2 sig figs.

Avogadro's Number:
6.022 x 10²³ atoms = 1 mole

6.4 x 10²⁴ atoms Al                1 moles
----------------------------  x  ------------------------------  = 10.6 moles Al

                                       6.022 x 10²³ atoms

= 11 moles Al

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