An iron ore sample is found to be 35.00% Fe by mass. How many grams of ore is needed to obtain 454.0 grams of

Fe?

Answer:

This is a simple ratio. If your ore is only 35% Fe, then you need 454.0 / .35 to get the grams of ore that you need.

100/35 x 454 1,297 grams of ore.

This is a simple ratio. If your ore is only 35% Fe, then you need 454.0 / .35 to get the grams of ore that you need.

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