Chemistry Q&A Library CHEM 101 Spring 2020 Lab 7: Molecular Models and Chemical Bonds Name Date Objectives: -To draw electron dot formulas and structural formulas of specific molecules -To explore using online model building kits Procedure: For each of the following molecules, please do the following: 1) Draw its electron dot formula and verify that it is correct by adding up all valence ...
AimTo build models of some simple molecules. ApparatusMulti-colored toothpicks, modeling clay, protractor, paper, ruler, pencils. Method. PART A Methane (CH. 4) 1. Roll some modeling clay into a small ball (about the size of a marble). 2. Select four toothpicks (one red, one blue, one green and one yellow).
Webinar on Laboratory Math II: Solutions and Dilutions. This Webinar is intended to give a brief introduction into the mathematics of making solutions commonly used in a research setting. While you may already make solutions in the lab by following recipes, we hope this Webinar will help you understand the concepts involved so that you can
including a “wet lab” which will include a chemical reaction, followed by a “LEGO lab” where LEGO bricks are used to model what happened to the chemical molecules in the wet experiment. Preconceptions of chemical reactions are explored through a class discussion. Several shared ideas will be written on the board for class record.
Experiment 5: Molecular Models Post-Lab Questions (continued) Draw three possible Lewis structures (a, b, c) for the fulminate anion with the connectivity CNO. Use formal charge to predict which is the most stable: 4. 1-2-3- S-5 o a.
Dumas figured out that substituting n=grams/molecular weight into the ideal gas law can help determine the molecular weight of gas giving us the equation of PV=nRT= g/MW RT. Now by rearranging this equation to solve for the molecular weight we obtain the equation of MW= mRT/VP = dv ⋅ RT/P.
Find out the answers in this quiz. The ideas that helped to establish the nature of chemical bonding came to fruition during the early 20th century, after the electron had been discovered and quantum mechanics had provided a language for the description of the behaviour of electrons in atoms.
Continuing the examination of molecular orbital theory as a predictor of chemical reactivity, this lecture focuses on the close analogy among seemingly disparate organic chemistry reactions: acid-base, S_N2 substitution, and E2 elimination.
Advanced: So far, we have discussed the basics of ionization energy. Now we want to look at the more advanced methods of solving for it. Two key characteristics of an atom or molecule that are very important to scientists are the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO).