Grab binders handouts returned work calculators begin the
Grab binders, handouts, returned work & calculators, begin the Do Now 5/21 DO NOW Directions: Use the following balanced reaction to answer questions 1 – 5. 2 Na + Cl 2 2 Na. Cl 1. Determine the Molar Masses for both Cl 2 and Na. Cl. 2. What is the Molar Ratio between Cl 2 and Na. Cl? 3. If you have 70 g of Cl 2, how many moles of Cl 2 do you have? 4. If you react 2 mol of Cl 2, how many moles of Na. Cl would you produce? 5. If you produced 4 mol of Na. Cl, how many grams of Na. Cl did you make?
Stoichiometry Recap Molar Mass = sum of mass #’s of all elements in a compound (g/mol) Mass Moles = grams ÷ Molar Mass Mole X Mole Y = use Molar Ratio Moles Mass = moles x Molar Mass
Example 1: Moles N 2(g) + 2 CO 2(g) 2 CN(g) + 2 O 2(g) 1. What is the mole ratio between CO 2 and O 2? 1. If you start with 3 moles of CO 2, how many moles of O 2 will you produce? 3. If you start with 5 moles of N 2, how many moles of CN will you produce?
Example 2: Climbing the Mole Hill 2 Na. Cl(aq) + Pb(NO 3)2(aq) 2 Na. NO 3(aq) + Pb. Cl 2(s) 3. If you produce 30 g of Pb. Cl 2, how many grams of Na. Cl did you use?
Stoichiometry Debrief Conversion Factors: Molar Mass Molar Ratio Keep track of your UNITS & COMPOUNDS!
Lab 4: Synthesizing Bioplastic Question: Which polymer, that of corn starch or potato starch, is the best option for Coke® to utilize on their newest line of biodegradable plastic bottles? Directions: 5 min to determine and record WHAT we are trying to accomplish in this lab
Lab 4: Synthesizing Bioplastic Question: Which polymer, that of corn starch or potato starch, is the best option for Coke® to utilize on their newest line of biodegradable plastic bottles? Directions: 15 min to… - Identify textual evidence that support Pre-Lab questions - Formulate a hypothesis on which polymer you believe would be best to use for plastic Coke® bottles.
Lab 4: Synthesizing Bioplastic Background Reading Purpose: - Find textual evidence that… - explains the advantages to using biodegradable plastics - explains the disadvantages of using biodegradable plastics - Define what a polymer is - Characteristics of polymers
Lab 4: Synthesizing Bioplastic Directions: - 45 min to synthesize bioplastic & clean up - Begin your lab report! Clean-Up: - Wipe down and rinse out glass container & spatula thoroughly - Clean all glassware and return materials to their original places - Wipe down your lab bench counter
Exit Ticket 6 Directions: You have 10 minutes to complete the Exit Ticket to the best of your ability. You MAY NOT use notes, but you may use a Periodic Table. When finished submit to the class bucket.
- Slides: 11