ОН , H2O2, H2O LOR H H' 1. Оз, -78 °С 2. (CH3)2S ROH, H2SO4

7. How much heat is gained when the temperature of 288 g of liquid water is raised by 25 °C from room temperature at 25 °C ? a. 30 096 J b. 60 192 J c. 15 058 J d. 20 618 J e. oJ

Use Le Chatelier’s Principle to answer the following:N2 + 3 H2 D 2 NH3 + heat when the [N2] is decreased the [H2] decreases / increases / is unchanged (circle one) when the [NH3] is increased the [H2] decreases / increases / is unchanged (circle one) when the [N2] is increased the [H2] decreases / increases / is unchanged (circle one) when the temperature is decreased the [H2] decreases / increases / is unchanged (circle one)

What type(s) of intermolecular forces are expected between CH;CH,CH,CH,CH,CH,OH molecules H H H H H H- -0-H H H H H H Indicate with a Y (yes) or an N (no) which apply. dipole forces induced dipole forces hydrogen bonding

요 Eto OEt 1. EtMgBr(xs) 2. H3O* HO

H2 ALcton 3N2 Recaction H

о на H2O

[Relerences] Acetaldehyde, CH; CHO, is a colorless, flammable liquid used in the manufacture of acetic acid, perfumes, and flavors. What is the heat of vaporization of CH3CHO? CH3 CHO(1) → CH3 CHO(g); AH° =? AH;(CH3CHO(1)) = – 191.8 kJ/mol AH;(CH3 CHO(g)) = - 166.1 kJ/mol Heat of vaporization = kJ Submit Answer Try Another Version 6 item attempts remaining Previc e to search

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 :0: I | H H-C-C-0-C-H F₂ H :O: ||| : 0: H H 1 .. H H 1 HIC-C-N-C-H H H :NEN 0: boiling point (Choose one) ✓ (Choose one) ✓ (Choose one) (Choose one) X

Aspirin has a higher molar mass compared to salicylic acid, however aspirin melts at a lower temperature than salicylic acid. Provide a brief explanation for this observation. Table 1 Compound: Formula: Salicylic Acid C;H6O3 Aspirin C9H3O4 Molar Mass: 138.12 Melting point: Ka 158-160°C 1.08 x 10³ 180.15 140-142°C 2.72 x 10$ pKa Solubility (g/100ML) 2.99 4.57 0.18 0.25