Van der waals equation - Study guides, Class notes & Summaries

Atoms - smallest unit of matter that retains all of the chemical properties of an element States of matter - the physical forms of matter, which include solid, liquid, and gas Liquid - No definite shape (takes the shape of its container) Has definite volume Particles are free to move over each other, but are still attracted to each other Solid - A form of matter that has a definite shape and volume Gas - A state of matter with no definite shape or volume Chemical bonds - link el...

BCH 341 Exam Questions & Answers 2023/2024 What are the two assumptions that define a perfect (or ideal) gas? - ANSWER-1. Molecules have no volume 2. molecules do not "feel" any interactions The van der Waals equation has two parameters, a and b. What does a correct for? - ANSWER-attractive forces The van der Waals equation has two parameters, a and b. What does b correct for? - ANSWER-finite size of molecule Which of these gases is expected to have a larger b constant? He or Xe? ...

Unit 27: Chemistry for Biology Technicians Unit code: K/502/5557 QCF Level 3: BTEC National Credit value: 10 Guided learning hours: 60 Aim and purpose This unit aims to provide learners with an understanding of the principles of chemistry for biology technicians and how these can be put into practice. This unit is primarily aimed at learners within a centre-based setting looking to progress into the sector or to further education and training. Unit introduction Biology technician...

T/F: The thermodynamics of a biochemical reaction can be driven by either favorable changes in enthalpy or favorable changes in entropy, but not by both. - ANSWER-False T/F: Hydrogen bonds are weak electrostatic interactions that are made possible by the presence of partial charges on H-bond donors and acceptors. - ANSWER-True T/F: Carbonic acid has a pKa of 6.37; acetic acid has a pKa of 4.76; therefore, carbonic acid is the stronger acid. - ANSWER-False T/F: Small proteins elute earliest...

C/P: What expression gives the amount of light energy (in J per photon) that is converted to other forms between the fluorescence excitation and emission events? "intensity of fluorescence emission at 440 nm excitation at 360 nm) was monitored for 20 minutes" A) (6.62 × 10-34) × (3.0 × 108) B) (6.62 × 10-34) × (3.0 × 108) × (360 × 10-9) C) (6.62 × 10-34) × (3.0 × 108) × [1 / (360 × 10-9) - 1 / (440 × 10-9)] D) (6.62 × 10-34) × (3.0 × 108) / (440 × 10-9) C) (6.62 × ...

Unit 30: Understand the Principles of Chemistry for Biological and Medical Science Unit code: A/600/9714 QCF Level 3: BTEC National Credit value: 10 Guided learning hours: 60 Aim and purpose The aim of this unit is to enable learners to be familiar with basic chemical concepts which underpin biology and biomedical professions. Unit introduction Biochemistry and physiology are essential components of the pre-clinical curriculum for veterinary and biomedical sciences: a base knowl...

A reaction had a ΔG > 0. For this reaction at equilibrium A) [products]/[reactants] > 1 B) [products]/[reactants] < 1 C) ΔH = -TΔS D) Keq > 1 E) B and D - ANSWER-B ([products]/[reactants] < 1) F is more probable than U because A) S water is increased B) van der Waals contacts are more favorable C) steric clashes are reduced upon folding D) all of the above E) A and B only - ANSWER-E ( A and B only) The entropy of water increases when the polypeptide chain adop...

atomic # - number of protons mass # - number of protons and neutrons isotopes - atoms with the same atomic number but different mass numbers cation - a positively charged ion anion - a negatively charged ion periods - horizontal rows of the periodic table groups (families) - vertical columns of the periodic table avogadros # - 6.022×10²³ molecular weight (molar mass) - the mass in grams of one mole of a compound theoretical yield - maxi...

HESI A2 ENTRANCEEXAM FOR CHAMBERLAINCOLLGE OF NURSING 2023 QUESTIONS WITH ANSWERS CHEMISTRY HESI A2 CHEMISTRY V1/V2 FILE 1. If a Hydrogen isin a compound, what would its oxidation number be? +1 2. What isthe oxidation number of any simple ion? +1 or -1 depending on the charge of the ion 3. How many kilograms are in a pound? 0. kg 4. What is the temperature for freezing point of water in Celsius? 0 degrees Celsius (32°F for Fahrenheit) 5. What is the conversion of Celsius to Fah...

HONS: BIOLOGICAL CHEMISTRY AND DRUG DISCOVERY STUDY GUIDE, EXAM QUESTIONS AND VERIFIED ANSWERS LATEST UPDATE 2024/2025 Biological Chemistry and Drug Discovery is a fascinating and complex field. I'll break down some key concepts and provide practice questions with answers. Let’s start with a general overview and then dive into specific topics. Key Concepts 1. Biological Chemistry: o Biomolecules: Understand the structure and function of proteins, nucleic acids, lipids, and carbohydr...