Van der waals Study guides, Class notes & Summaries

Typical Van der Waals energies are about: correct answers 2-4 kJ/mol A possible drug to treat COVID-19 has been discovered and is known to be a weak acid. At the pH of blood (7.4) the concentrations of acid and conjugate base are 0.075 and 0.025 respectively. What is its pKa? correct answers 3.00 What is the [A-]/[HA] ratio whent he weak acid is in solution alone pH unit above its pKa? correct answers 10:1 What are the primary chemical components present in a phosphate buffer at pH 7.4?...

Polysaccharides (saccharides are carbohydrates) correct answers Polymer of monosaccharides Peptide bond correct answers Bond between amino acid residues to form a polypeptide chain. (Amide linkage) Phosphodiester bond correct answers Bond that connects nucleotides together to form nucleic acids Glycosidic bond correct answers Any bond that links a sugar to something else Hydrogen bond donor correct answers A hydrogen bonded to an electronegative atom Hydrogen bond acceptor correct...

T or F: A biochemical reaction, without a catalyst or thermodynamic coupling, takes 50 years to reach a state of equilibrium. W/o more information, we cannot make a determination on either the value of the Keq constant or the positive or negative value of the DeltaG of the reaction Correct Answer-False T or F: Due to its small size, the amino acid glycine can be found in tight turns in a protein structure Correct Answer-True T or F: The Delta G of a reaction is defined as the energy requir...

van der Waals correct answer: -weakest (short lives) but lots could strengthen the bond -furthest distance -form as a result of hydrophobic interactions -strength depends on the size of the atoms and the distance between them -cannot be closer than the Van der Waals contact distance or else positively charged nuclei will repel each other (energy= 0) Proteins correct answer: main action molecule of the cell (Most chemical processes of the body are carried out by proteins) -classified in...

4 key biomolecules of life correct answers proteins, nucleic acids, lipids, and carbohydrates weak bonds correct answers hydrogen bonds and van der Waals interactions. allow for dynamic interactions and permit energy and information to move about the cell and organism hydrophobic molecules correct answers fats and steroids in which they repel water, they cannot interact with water at all. Brownian motion correct answers the chaotic movement of colloidal particles, caused by collision wi...

Which of the following bond types is the weakest? Isotopic bonds Van der Waals forces Hydrogen bonds Ionic bonds Nonpolar covalent bonds Polar covalent bonds - Van der Waals forces The lower the pH of a solution, the ________. lower the H+ concentration more neutral the solution is greater the number of oxygen atoms greater the number of H+ in solution less toxic the solution is - greater the number of H+ in solution Which functional group is made of one N atom and two H atoms? pho...

BTEC Applied Science Unit 1 Chemistry (Graded) How many electrons can a d subshell hold? correct answer10 Which subshells are available in the first energy level? correct answers Which subshells are available in the second energy level? correct answers and p Which subshells are available in the third energy level? correct answers, p and d What is Hund's rule? correct answerOrbitals must all be singly filled before they can be doubly occupied Which elements do not fill the 4s subshell befor...

Bios 1300 Cumulative Final Exam Questions with Correct Answers Which of the following bond types is the weakest? Isotopic bonds Van der Waals forces Hydrogen bonds Ionic bonds Nonpolar covalent bonds Polar covalent bonds - Answer-Van der Waals forces The lower the pH of a solution, the ________. lower the H+ concentration more neutral the solution is greater the number of oxygen atoms greater the number of H+ in solution less toxic the solution is - Answer-greater the number of H...

Immunology Final Exam (2024) || Questions & Answers (100% Verified) Immunology Final Exam (2024) || Questions & Answers (100% Verified) Which of the following is NOT apart of the Acquired Immune System? a. Passive Immunization b. Active Immunization c. Physiological and Chemical Barriers d. None of the above - ANSWER - C. Physiological and Chemical Barriers What are the characteristics of the Immune Response? a. Adaptive b. Indiscrimination between self and none-self c. A & B d. A...

IB Chemistry SL: Topic 4 Latest Version Graded A Ionic Bond Electrostatic attraction between oppositely charged ions Covalent Bond Electrostatic attraction between a pair of electrons and positively charged nuclei, formed as a result of electron sharing Metallic Bond Electrostatic attraction between a lattice of positive ions and delocalized electrons Polyatomic ions ions with more than one element e.g. CaCO3, Al(OH)3, Mg(NO3)2, (NH4)2SO4, Ba3PO4, LiHCO3 Lattice ions arran...