Write structural formulas for each of the following:

(a) $3,3$-dimethyl-$2$-butanone ("pinacolone")

(b) $3$-hydroxybutanal ("acetaldol")

(c) ethyl pentanoate ("ethyl valerate")

(d) $6$-methyl-$2$-heptanamine ("isooctylamine")

Which of the following statements is (are) false? Explain why the statement(s) is (are) false. Trimethylamine is a structural isomer of $\mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { NH } _ { 2 }.$

Draw the “start” (the first three repeating units) of the structural formula of the addition polymers made from the following monomers. a. Propylene b. 1,1,2,2-Tetrafluoroethene c. 2-Methyl-1-propene d. 1,2-Dichloroethylene

Match the definition with the following.

A. le racisme

B. une maladie

C. le terrorisme

D. la pauvreté

E. le chomage

F. la faim

G. lalcoolisme

H. la drogue

I. la guerre

J. la violence

K. les sans-abri

Quand on n'a pas assez d’argent pour vivre.

Match the definition with the following.

A. le racisme

B. une maladie

C. le terrorisme

D. la pauvreté

E. le chomage

F. la faim

G. lalcoolisme

H. la drogue

I. la guerre

J. la violence

K. les sans-abri

Personnes qui nont pas dendroit o$\`{u}$ habiter.

Match the definition with the following.

A. le racisme

B. une maladie

C. le terrorisme

D. la pauvreté

E. le chomage

F. la faim

G. lalcoolisme

H. la drogue

I. la guerre

J. la violence

K. les sans-abri

Quand on ne trouve pas de travail.

A and B are $n \times n$ matrices. Mark the statement True or False. Justify your answer. If det A is zero, then two rows or two columns are the same, or a row or a column is zero.

You encounter a hydrocarbon with the name 2-ethyl-3-methylhexane. Is this a proper IUPAC name? If not, what is the proper IUPAC name? To answer this question, start by writing the condensed structural formula based on this name.

Match the definition with the following.

A. le racisme

B. une maladie

C. le terrorisme

D. la pauvreté

E. le chomage

F. la faim

G. lalcoolisme

H. la drogue

I. la guerre

J. la violence

K. les sans-abri

Quand les personnes utilisent la force physique.

Show $A$ to be an $m \times n$ matrix with linearly independent columns. Show that $n \leq m$. Thus, the $m \times n$ matrix $A$ in the $\mathrm{QR}$ Factorization Theorem must have at least $n$ rows.

A parody seeks to poke fun at or critique some aspect of society. Cervantes uses parody in Don Quixote to offer his critique of a life and time dominated by greed and violence, as well as to poke fun at popular novels about chivalry, such as Amodils de Goula.

How does Cervantes use Don Quixote's madness to help him parody aspects of life?

Sucrose is cleaved in your saliva by the enzyme sucrase to release glucose and fructose. Use the structural formula of sucrose to describe fructose using the terms that define its carbon number and placement of the carbonyl group.

Discuss the geometric differences among helical, polyhedral, and complex viruses.

Match the definition with the following.

A. le racisme

B. une maladie

C. le terrorisme

D. la pauvreté

E. le chomage

F. la faim

G. lalcoolisme

H. la drogue

I. la guerre

J. la violence

K. les sans-abri

Quand la différence de race justifie l'injustice.