503.jpg ^ 1:50 molecular loval pictu 4. Ethanol (shown below) has a boiling point of 78 °C. When the temperature of ethanol is raised from room temperature to 78 °C, what is broken? Use a molecular level picture to clearly show this. H H H C C O H H H

Q5. As part of the aspirin synthesis lab, the orgo students also had to perform the following calculation to demonstrate their knowledge. Are you able to help them work this out? Saponification is a process in which soap is produced from the chemical reaction between animal fat (triglycerides) and a strong base such as KOH. An example of such a balanced chemical reaction is shown here: C51H98O6 + 3KOH à C3H5(OH)3 + 3C16H31O2K Triglyceride                                        Soap If, during the saponification reaction, 231.5 g of C51H98O6 is mixed with 231.5 g of KOH and 160 g of soap is produced: Calculate the theoretical yield of soap (in grams), C16H31O2K, and indicate which species is the limiting reactant. Provide your answer to 2 decimal places (5). Calculate the percent yield for this reaction. Provide your answer to 1 decimal place (1). Show ALL steps and equations involved in your calculations. Remember to label all steps clearly and use appropriate units.

10. The Madrigal family grills every Sunday after their weekly soccer match with the Dorsey family. To grill, however, they need a total of 246.44 g of propane gas. How many protons are there of carbon in 264.44 g of propane gas? 11. Diego is saving turtles from a plastic net and must swim across 1.403 x 1034 molecules of water. How many liters of water does Diego need to swim through to get to the turtles? 100 days in summer vacation and one of those days you go for a swim. The po molecules of H₂O are there in the pool?