Match each statement on the left with the statement on the right to form a complete (and true) sentence. The exponents in a mass action expression Solids and liquids Gases Aqueous species

nk 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 nt, 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 NO :O: H HIC C-H 1 H N₂ :0: || .. HIC N-H 1 H boiling point ✓ (Choose one) 1 (highest) 2 3 4 (lowest) (Choose one) ✓ (Choose one) ✓ X Ś

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 H chemical symbol, chemical formula or Lewis structure H :0: 44 - C- C-H H - H 1 C I Ar H H | | - C - | 1 H H H Ag H CIO : 0: H boiling point ✓ (Choose one) 1 (highest) 2 3 4 (lowest) (Choose one) ✓ (Choose one) ✓

7.84 Which of the following molecules is least likely to actually exist OF4,SF4,SeF4 , or TeF4 ? Why?

The structure of pyridine is When a proton becomes bonded to the nitrogen atom by way of its unshared electron pair, the result is _____________________________

Calculate the lattice energy of KCI(s) using the following thermodynamic data (all data is in kJ/mol) K(s) AHsublimation = 69 kJ/mol K(g) Ionization energy = 399 kJ/mol CI-CI(g) Bond energy = 223 kJ/mol Cl(g) Electron affinity = -369 kJ/mol KCI(s) AH°r= -457 kJ/mol kJ/mol

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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 H H C - :NEN 0: chemical symbol, chemical formula or Lewis structure H :0: | || C H HIC - H F₁ H :0: | || с C - : 0: H -0. - C N- I H H C-H H 1 C —E H - H boiling point ✓ (Choose one) C 1 (highest) 2 3 4 (lowest) (Choose one) ↑ (Choose one) C olo 18 Ar