O Macmill Which of these compounds does NOT have a net dipole? O sulfur dioxide, SO₂ O water, H₂O O carbon dioxide, CO₂ O hydrogen fluoride, HF

2+ How many valence electrons are in He? X S

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B U e chemical symbol, chemical formula or Lewis structure Ar Ag H :0: H 1 HIC C-C-H 1 H H H H H HIC CICI H H H - H boiling point (Choose one) (Choose one) (Choose one) (Choose one) X

How many electrons surround the sulfur atom in the SF molecule? 8 O 10 O 12 D<

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C D chemical symbol, chemical formula or Lewis structure H : Cl H Nb Cl5 - N | H : Cl: C : Cl: -D - H · Η Cl I C-H I H boiling point ✓ (Choose one) | (highest) 2 3 4 (lowest) (Choose one) (Choose one) ✓

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C D chemical symbol, chemical formula or Lewis structure N₁₂ :0: || H-CN-H NO :0: | H H H-C-C-H I H boiling point (Choose one) (Choose one) (Choose one) (Choose one)

Classify each as ionic, covelent non polar or covelent polar C-S Na-Br N-N C-C

The chemical formula is C8H9NO2. Draw the molecule and include all lone pairs of electrons.

For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. name compound hypochlorous acid hydrogen fluoride methanimine formula or Lewis structure HCIO HF H 1 H-C=N-H Between molecules of the compound? O yes O no O yes O no hydrogen-bonding force O yes O no Between molecules of the compound and molecules of water? O yes O no O yes Ono O yes O no X G

For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. name methane formic acid compound hydrogen fluoride formula or Lewis structure CHA :0: 11 H-C-O-H HF Between molecules of the compound? O yes O no O yes O no hydrogen-bonding force O yes O no Between molecules of the compound and molecules of water? O yes O no yes O no O yes O no X G