A substance that dissolves easily in water is said to be hydrophobic.

Pairs of weak acids and bases that resist changes in pH when small amounts of acids or bases are added are known as buffers.

Solve the problem.There were 460 people at a play. The admission price was $2 for adults and $1 for children. The admission receipts were $700. How many adults and how many children attended?

Find the product.(-7a + 6b)(-5a – 9b)

Which descriptor best fits the site indicated by an arrow below?  

Compare and contrast the stability of alkenes and alkynes. Make sure to include the following points: Describe the structure of alkene and alkyne functional groups. Which have weaker strength pi bonds: alkenes or alkynes? Contrast them. Which are more reactive to addition reactions: alkenes or alkynes? Why? Compare and contrast them. 

How many degrees of unsaturation are represented by an alkyne?

Choose the major product(s) of the following reaction. 

In the following multi-step synthesis: Describe the reaction that happens in step 1.  Explain or name the product in the middle box.   Describe the reaction that happens in step 2.  Propose the IUPAC name of the final product.        

Answer the following questions with complete explanations of your reasoning for each.  Which of the following fatty acids is most likely to be solid at room temperature?  Which of the fatty acids above would turn orange last upon addition of bromine?  CH3(CH2)4(CH=CH)CH2(CH=CH)(CH2)7COOH CH3(CH2)18COOH CH3(CH2)7CH=CH(CH2)6COOH CH3(CH2)16COOH