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In a #10g# mass of an iron oxide there are #4g# of iron. How many grams of oxygen are there?

Answer 1

If I have #£10-00# and I give you #£4-00#, then how many pounds do I have left?

You have formed #10*g# of an oxide of iron; this could #FeO#, or #Fe_2O_3# or a mixed valence oxide. The point is that the constituent atoms are the metal and oxygen. If the iron content is #4*g# then surely there must be a #6*g# mass of oxygen.

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Answer 2

Cooper Anderson

To find the mass of oxygen, subtract the mass of iron from the total mass of iron oxide.

Mass of oxygen = Total mass of iron oxide - Mass of iron Mass of oxygen = 10 g - 4 g = 6 g

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

In a #10*g# mass of an iron oxide there are #4*g# of iron. How many grams of oxygen are there?

In a #10g# mass of an iron oxide there are #4g# of iron. How many grams of oxygen are there?