Why the atomic mass listed on the periodic table if 63.55?

Chemistry

1 answer:

Artist 52 [7]3 years ago

3 0

Answer:

If you are asking why the atomic mass on the periodic table only goes to the hundredth's place, it is because of significant figures. No number is exact, like it can be 63.5500001, and it will go to a certain point before it cease to matter in experiments.

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This answer assumes that the strated "16.0g of iron" was meant to be 16.0 grams of iron(III) oxide.

Explanation:

To start, the thermite equation must be balanced.

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(0.200 moles Fe)*(55.85 g Fe/mole Fe) = 11.2 grams Fe

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