1. Bell Work: Intro to Stoicheometry
Balance the reaction: N H2  NH3
How many moles of nitrogen react?
How many moles of hydrogen react?
How many moles of ammonia are produced?
If 3 moles of nitrogen react, how many moles of ammonia will be produced?

2. http://www. youtube. com/watch
Na + H2O  NaOH + H2

3. Na + H2O  NaOH + H2 Balance the equation. 2 Na + 2 H2O  2 NaOH + H2
What is the mole ratio between sodium and hydrogen?
𝟐 𝒎𝒐𝒍 𝑵𝒂 𝟏 𝒎𝒐𝒍 𝑯 𝟐 OR 𝟏 𝒎𝒐𝒍 𝑯 𝟐 𝟐 𝒎𝒐𝒍 𝑵𝒂
What pairs of chemicals will have a 2 to 2 ratio?
Sodium: water
water: sodium hydroxide
Sodium: sodium hydroxide

4. 2Na + 2H2O -> 2NaOH + H2
How many moles of hydrogen gas will be produced from 0.2 mol sodium?
0.2 𝑚𝑜𝑙 𝑁𝑎 1 𝑚𝑜𝑙 𝐻 2 2 𝑚𝑜𝑙 𝑁𝑎 =
0.1 mol H2
5. How many moles of hydrogen gas will be produced from 99 mol sodium?
99 𝑚𝑜𝑙 𝑁𝑎 1 𝑚𝑜𝑙 𝐻 2 2 𝑚𝑜𝑙 𝑁𝑎 =
49.5 mol H2
6. How many moles of water will react with 9,000 mol sodium?
9000 𝑚𝑜𝑙 𝑁𝑎 2 𝑚𝑜𝑙 𝐻 2 𝑂 2 𝑚𝑜𝑙 𝑁𝑎 =
9000 mol H2