Problem 4
List two nonmetal elements that combine with three hydrogen atoms to satisfy the octet rule.
Problem 4
Germanium, antimony, selenium, and bromine each bond to a different number of hydrogen atoms. \(\mathrm{GeH}_{4} \quad \mathrm{SbH}_{3} \quad \mathrm{H}_{2} \mathrm{Se} \quad \mathrm{HBr}\) a. Draw Lewis dot symbols for Ge, Sb, Se, and Br. b. Draw a Lewis dot structure for each molecule. c. Explain the pattern in the number of hydrogen atoms.
Problem 4
Make a list of i ve things from home that have no smell.
Problem 5
Draw Lewis dot structures for these molecules. Notice that in part \(\mathrm{d}\) and part \(\mathrm{f}\), the formulas are written in a way that emphasizes the structure of the molecule. a. \(\mathrm{CF}_{4}\) b. \(\mathrm{CH}_{3} \mathrm{Cl}\) c. \(\mathrm{SiCl}_{2} \mathrm{H}_{2}\) d. \(\mathrm{CH}_{3} \mathrm{OH}\) e. \(\mathrm{HOCl}\) f. \(\mathrm{CH}_{3} \mathrm{NH}_{2}\)
Problem 5
Explain how you can convert acetic acid into an ester. Be specific about how the molecule needs to change.
Problem 5
Think about how molecules might interact with your nose. Why do you think molecules with different structural formulas have different smells?
Problem 5
In a paragraph or two, write about one of the following. You may use a cartoon format instead, if you wish. a. Describe a memory that you have that relates to smell. Describe the smell itself and what it reminds you of. (Avoid using adjectives that are not informative, such as “weird.”) b. If you were a smell superhero, how would you use your smell superpowers or your enhanced sense of smell to assist the world? c. What would your life be like if you couldn’t smell?
Problem 5
Draw Lewis dot structures for the molecules listed here. a. \(\mathrm{TeCl}_{2}\) b. \(\mathrm{HI}\) c. \(\mathrm{AsBr}_{3}\) d. \(\operatorname{SiF}_{4}\) e. \(\mathrm{F}_{2}\)
Problem 5
Consider a compound called hexanol. Chemists can tell from its name that it has six carbons (hex-) and it is an alcohol (-ol). a. What is the molecular formula of hexanol? b. Draw a possible structural formula for hexanol. c. Is the molecular formula or the structural formula more useful in determining the smell of hexanol? Explain.
Problem 6
Use the octet rule to draw Lewis dot structures for all the stable molecules with the molecular formula \(\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}\) . (Hint: There are three total molecules.)
