1. By: Barbara Goodwin Pd. 7 April 2009 BEGIN

2. 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? H 2 O + Fe H 2 + Fe 2 O 3 What should you do next? Balance the equation Cheat Cry because you can’t do the problem

3. Good Job!! What weight of steam would be needed to react completely with 100.0 grams of iron? 3 H 2 0 + 2 Fe H 2 + Fe 2 O 3 Now the equation is balanced. What’s next? Get a hint Start first conversion factor Just want the answer

4. Nice! What weight of steam would be needed to react completely with 100.0 grams of iron? 3 H 2 0 + 2 Fe H 2 + Fe 2 O 3 100.0g Fe 1 mol Fe 1 56.0g Fe What’s next? Ask for help Convert moles of H 2 O to moles of Fe Convert moles of Fe to moles of H 2 O

5. Great! What weight of steam would be needed to react completely with 100.0 grams of iron? 3 H 2 0 + 2 Fe H 2 + Fe 2 O 3 100.0g Fe 1 mol Fe 3 mol H 2 O 1 56.0g Fe 2 mol Fe What’s next? Get the answer Convert grams of H 2 O to moles of H 2 O Convert grams of Fe to moles of H 2 O

6. You’ve got this! What weight of steam would be needed to react completely with 100.0 grams of iron? 3 H 2 0 + 2 Fe H 2 + Fe 2 O 3 100.0g Fe 1 mol Fe 3 mol H 2 O 18.0g H 2 O 1 56.0g Fe 2 mol Fe 1 mol H 2 O What’s next? Next conversion factor Multiply then divide to find the answer Just quite

7. What weight of steam would be needed to react completely with 100.0 grams of iron? 3 H 2 0 + 2 Fe H 2 + Fe 2 O 3 100.0g Fe 1 mol Fe 3 mol H 2 O 18.0g H 2 O 1 56.0g Fe 2 mol Fe 1 mol H 2 O 48.21428571g H 2 O 48.21g H 2 O48.21g Fe What’s the answer?

8. Great Job! You know Stoichiometry!! Exit

9. Think again!! Go Back

10. Try Again