By: Barbara GoodwinPd. 7April 2009

BEGIN

When steam (hot water) is passed over iron, hydrogen gas and iron (III) oxide are formed.

What weight of steam would be needed to react completely with 100.0 grams of iron?

H2 O + Fe H2 + Fe2O3

What should you do next?

Balance the equation Cheat

Cry because you can’t do the problem

Good Job!! What weight of steam would be needed to react completely with 100.0

grams of iron?

3 H20 + 2 Fe H2 + Fe2O3

Now the equation is balanced. What’s next?

Get a hintStart first

conversion factor

Just want the answer

Nice! What weight of steam would be needed to react completely with 100.0

grams of iron?

3 H20 + 2 Fe H2 + Fe2O3

100.0g Fe 1 mol Fe 1 56.0g Fe

What’s next?

Ask for helpConvert

moles of H2O to moles of Fe

Convert moles of Fe to moles of H2O

Great! What weight of steam would be needed to react completely with 100.0

grams of iron?

3 H20 + 2 Fe H2 + Fe2O3

100.0g Fe 1 mol Fe 3 mol H2O 1 56.0g Fe 2 mol Fe

What’s next?

Get the answer

Convert grams of H2O to moles of

H2O

Convert grams of Fe to moles of H2O

You’ve got this! What weight of steam would be needed to react completely with 100.0

grams of iron?

3 H20 + 2 Fe H2 + Fe2O3

100.0g Fe 1 mol Fe 3 mol H2O 18.0g H2O 1 56.0g Fe 2 mol Fe 1 mol H2O

What’s next?

Next conversion

factor

Multiply then divide to find the answer

Just quite

What weight of steam would be needed to react completely with 100.0 grams of iron?

3 H20 + 2 Fe H2 + Fe2O3

100.0g Fe 1 mol Fe 3 mol H2O 18.0g H2O 1 56.0g Fe 2 mol Fe 1 mol H2O

48.21428571g H2O 48.21g H2O 48.21g Fe

What’s the answer?

Great Job!You know

Stoichiometry!!

Exit

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