Nonpolar and Polar Solutions demo CER_Fall 2022 Prachi Patel

Explain implications of the hydrogen bonding between water molecules The images to the right depict hydrogen bonding between water molecules. What are some effects of these bonding forces? HS+ H 8+ 4....... 8- (Η) O H 8+ Hydrogen bonds OH- O 8- Ho+ https://www.scienceabc.com/pure-sciences/is-carbon-dioxide-co2-polar-or-nonpolar.html; https://socratic.org/questions/why-does-water-form-hydrogen-bonds-1

Anserw 1 and 2

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

Yellow Food Dye Water OH HO OH HO OH HO HH HO. e OH Analysis Question 2: What type of attractions occur between the dye and the water based on their molecular structures?

Mark any/all that apply to the sodium ion. Its predominant interaction with water is ion-dipole. Its formula is Na. Its formula is Na. Its predominant interaction with water is dipole-dipole. Its formula is Na. Its predominant interaction with water is an ionic bond or salt bridge.

earson Realize Dashboard CK Student Resources |- E Google Docs - creat. A google classroom O Nearpod 9 Welcome- O Meeting is in progre. A CI- ion would be attracted to which part of the water molecule? H+ H- US VI 10:57 hp

Calculate the ionic radius of the fluoride ion using only the following interionic distances and the radius of the iodide ion = 219 picometers (pm). RbI, 367 pm; NaF, 231 pm. RbBr, 344 pm; KBr, 329 pm; KCl, 314 pm; NaCl, 279 pm;

Determine the bulk density of CaF2 in g/cm3.  At. mass Ca = 40.08 g/mole.  At. mass F = 19.00 g/mole.  Avogadro's # = 6.022 x 1023 atoms/mole of atoms.

Which statement best describes the structure of water and its nature as a solvent? O The water molecule is polar and will dissolve polar molecules, such as sugar. O The water molecule is polar and will not dissolve ionic compounds, such as salt. The water molecule is nonpolar and will dissolve polar molecules, such as vinegar. O The water molecule is nonpolar and will dissolve nonpolar molecules, such as oil.

The ammonia molecule (NH₂) has a dipole moment of 5.0 x 10-30C-m. Ammonia molecules in the gas phase are placed in a uniform electric field with magnitude 1.2x10° N/C. Part A What is the change in electric potential energy when the dipole moment of a molecule changes its orientation with respect to from parallel to perpendicular? Express your answer using two significant figures. ΑΣΦ AU = Submit Part B T= Submit Request Answer Provide Feedback At what absolute temperature T is the average translational kinetic energy KT of a molecule equal to the change in potential energy calculated in part (a)? (Note: Above this temperature, thermal agitation prevents the dipoles from aligning with the electric field.) Express your answer using two significant figures. |VD ΑΣΦ P ? Request Answer J X ? Review Constants K Next >

Calculate the Molar mass of a volatile liquid (g/mol) from the following data:- Mass of dry flask, foil, and rubber band (g) = 102.722 Temperature of boiling water (°C) = 97.5 Mass of dry flask, foil, rubber band, and vapors (g) = 103.801 Volume of Erlenmeyer flask (Litres) = 0.997 Atmospheric pressure (atm) = 1 8.7 g/mol O A. 19.9 g/mol OB. 29.9 g/mol 32.9 g/mol D. 35.9 g/mol O E.

The solvent hexane, C6H14 is shown here: H HHHHH H. H HHHHH H Hexane is: O a. a hydrogen-bonded solvent O b. always a gas C. a polar solvent Od. a non-polar solvent EO e. an lonic solvent

5- Explain why water forms into beads on a waxed car finish.

Appendix A. Notes on Molecular Polarity To determine the polarity of a molecule, both the bonds present and the overall shape of the molecule should be considered. Two or more polar bonds may cancel each other out leading to a nonpolar molecule. Extension Activity _ Enrichment Dipole-Dipole Forces Hydrogen Bonding Polar or London Substance Nonpolar Dispersion Forces H-F: ннн H-C-C-C-H H HH HNH

5. Methane clathrate also called methane hydrate is a form of ice in which methane gas has been trapped inside the crystal structure. Methane hydrate has the formula CH4-5% H20 or 4CH4-23H20. Large quantities of methane hydrate have been discovered in ocean sediments around the world. Mining these deposits to obtain methane (i.e. natural gas) has been discussed for years. Determine the percent water in methane hydrate. How many moles of methane could be recovered from 1.00 ton (2000 Ibs) of methane hydrate? [1 kg = 2.2 Ibs] Methane Water. METHANE CLATHRATE

Explain (in one sentence) why Mg2+ has larger hydrated diameter compared to Ba2+.

what is the Report. answer L percent water in hydrate. olt Nacl 2H26