The answer is the second option "rusting car fender." Hope this helps.
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Add more solvent to decrease the concentration.
Answer:
2.13 × 10²² moles
Explanation:
Relation between Mole and Mass is,
Mole = Mass / M.Mass
Putting values,
Mole = 2.3 × 10²⁴ g / 107.87 g/mol
Mole = 2.13 × 10²² moles