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Chemistry 77 Online
prettybou34567:

Rust is a compound that is 70.7% iron, and 29.3% oxygen. How many grams of iron, and how many grams of oxygen are there in 680.0 grams of rust?

Vocaloid:

iron = 70.7% of 680.0g oxygen = 29.3% of 680.0g report your solutions to three significant figures

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