How many grams are in 3.45 × 1022 formula units of NaNO3?

4.87 g

Explanation:

Step 1: Calculate the moles of sodium nitrate

Considering the Avogadro's number, in 1 mole of sodium nitrate there are 6.02 × 10²³ formula units of sodium nitrate. We will use this ratio to find the moles corresponding to 3.45 × 10²² formula units.

Step 2: Calculate the mass corresponding to 0.0573 moles of sodium nitrate

The molar mass of sodium nitrate is 84.99 g/mol. The mass corresponding to 0.0573 moles is:

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