Question

How many grams are there in 2.0468 x 1025 atoms of NaCl

Answer 1

ATOMS TO MASS

Convert the amount of atoms into moles.

1 mol of an element = 6.022 x 10²³ atoms

(2.0468 x 10²⁵ atoms NaCl) / (6.022 x 10²³ atoms NaCl / 1 mol NaCl)

= 33.99 mol NaCl

Convert the number of moles into mass.

1 mol NaCl = 58.44 g/mol

(33.99 mol NaCl)(58.44 g NaCl / 1 mol NaCl)

= 1986.38 g NaCl

$\:$

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