There is a lot of chemistry going on all around you. If you start to observe a bit more intentionally, you will notice many new discoveries, articles, news stories, and breakthrough research happening everyday. And science can only be useful and keep moving forward if it is shared. For this discussion, you get to […]
This is real? I found some tips, but I think that I will not be able to cope because there is very little time. Here’s what I learned. First, make a plan, select all the necessary information to write a scientific work. Using it, complete the writing of the introduction and the first, theoretical chapter. […]
1 KINETICS I: DETERMINATION OF A RATE LAW ADDITIONAL READING The concepts in this experiment are also discussed in sections 13.2 and 13.3 of Principles of Chemistry – A Molecular Approach, by Tro. ABSTRACT In this experiment you will qualitatively measure the rate of reaction using the initial rate method. This method involves measuring the […]
pre-lab questions 1. What is an electron configuration? 2. How is the light emitted by an atom related to its electron configuration? experiment 1 data sheet Table 2: Results of Firework Material Ignition SubstanceObservations Lithium chloride (LiCl) Sodium chloride (NaCl) Potassium chloride (KCl)Calcium chloride (CaCl2)Table 3: Electron Configuration ElementElectron Configuration KLi NaCa1s2 2s2 2p6 […]
I need help with this limiting reagent question for chemistry. Souring of wine occurs when ethanol is converted to acetic acid by oxygen by the following reaction: C2H5OH+O2 yields CH3COOH+H2O. A 1.00 L bottle of wine, labeled as 8.5% (by volume) ethanol, is found to have a defective seal. Analysis of 1.00 mL showed that […]
pre-lab Questions 1. Write a balanced equation for the precipitation of calcium carbonate from potassium carbonate and calcium chloride. 2. Using this balanced equation, determine the limiting reactant if 15 grams of calcium chloride was reacted with 15 grams of potassium carbonate. experiment 1: gravimetric analysis with calcium chloride and potassium carbonate Data Sheet […]
CHEMISTRY HW HELP! H+ concentration, M Electrical potential, mV 0.1 284.2 0.01 244.7 0.001 199.2 1 x 10-4 157.6 1 x 10-5 134.0 1 x 10-6 120.5 1 x 10-7 115.4 Saline 158.2 1.) Calculate the pH of each of the H+ standards and fill in the chart below. Prepare a graph of the pH […]
Directions: The report must be based on information you gather and summarize. Do not cut and paste any information into the report The report must have a Cover page that includes the Title and your name and the name of the rare earth element you choose for your report. The report must be […]
Bonding Theories in General Chemistry Applying Lewis Model, VSEPR, Valence Bond and Molecular Orbital Theories. **The Concept Map** •Prepare a concept map on “molecular shapes”. The concept maps must include the following “categories” (information): Octet rule, Lewis and VSEPR theory, Valence Bond(and hybridization), and Molecular Orbitals. **Construct a virtual 3D model** Choose a molecule with […]
CHEMISTRY HW HELP! H+ concentration, M Electrical potential, mV 0.1 284.2 0.01 244.7 0.001 199.2 1 x 10-4 157.6 1 x 10-5 134.0 1 x 10-6 120.5 1 x 10-7 115.4 Saline 158.2 1.) Calculate the pH of each of the H+ standards and fill in the chart below. Prepare a graph of the pH […]
