A student performs the Determining the Heat of Fusion of Water experiment and obtains the following data. mass of empty calorimeter (g): mass of calorimeter with hot water (g): hot water temperature just before adding ice ("C): 81.5 lowest water temperature ("C): mass of calorimeter with cooled water (g): 5.2191 54.8518 2.4 97.4000 Calculate the mass of the ice that melted during the experiment in grams. Report your answer to four decimal places. Your Answer: Answer

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 NaOH. An example of such a balanced chemical reaction is shown here:C57H110O6 + 3NaOH à C3H5(OH)3 + 3C18H35O2NaIf, during the saponification reaction, 228.5 g of C57H110O6 is mixed with 211.7 g of NaOH and 180 g of soap is produced: a. Calculate the theoretical yield of soap (in grams), C18H35O2Na, and indicate which species is the limiting reactant. Provide your answer to 2 decimal places. b. Calculate the percent yield for this reaction. Provide your answer to 1 decimal place. Show ALL steps and equations involved in your calculations. Remember to label all steps clearly and use appropriate units

A education.wiley.com + Chapter 3 9 of 20 く - / 1 Calculate the theoretical percentage compositions for NO %N = i % %O = i NO2 %N = i %O = i

Why are ducks waterproof? It’s because they produce copious amounts of oils from their uropygial glands and spread it across their feathers. In this exercise, we’ll be investigating the molecular structure of one of these preen oils to determine how it keeps ducks dry. Q.5 - Preen oil is actually a complicated mixture of many different organic compounds, such as the structure seen previously.. Ornithologists have determined that birds often use preen oil compounds for scent recognition. Below, several different chemicals isolated from preen oil are shown, along with their vapor pressures at room temperature. p-cymene has the highest vapor pressure, meaning it is the most easily evaporated compound of the three listed. Explain why p-cymene has a higher vapor pressure at room temperature compared to the other compounds. Make sure to explain what holds the p-cymene in the sample. (Image attached)

CH CHO NO2 .CI CHCI/AICI3 ČI CH3 CH3 HBr at 40°C

CH3 1) Hg(OAc)2 H20 a) 2) NaBH4 H3C CH3 1) BH3 D 2) H,OH,0

Answer only the one question below. This is about a labwork in chemistry, i need your help.   These are the solute to be dissoolve in water and vegetable oil: Acetic acid (vinegar) Sucrose (sugar) Monosodium glutamate (vetsin) Cellulose (cotton fiber) Isopropyl or ethyl alcohol Fatty acid salts (soap) Kerosene Naphthalene balls  (NOTE: So this 10 will be mixed with water and vegetable oil)   Question: 1. What do you think is the main difference of the outcome of the solution of those who are mixed with water and those who are mixed the mixed with vegetable oil? Please show the difference and similaries(if theres any).

Indique si las siguientes reacciones presentadas siguen el mecanismo SN1 o SN2. 1 H3C. CH,01 CH,OH CH CH,COO1 H3C Br CH,COOH CH CH, H,O H,C CH,CH,OH CI O a. 1-SN1, 2-SN2, 3-SN1 Ob.1-SN1, 2-SN1, 3-SN1 Oc1-SN2, 2-SN1, 3-SN1 Od.1-SN2, 2-SN1, 3-SN2 2.

H₂C CH3 OH KMnO4 H₂C CH3 H –

H3C. OSN1 O E1 O SN2 O E2 NH3 H₂O/CH₂OH H3C. NH₂