you are an EH&S professional returning home from your plant on a summer friday afternoonat about 4 p.m. You have just picked up some materials from a nearby building supply store for a weekend backyard project (cement, sand, wood, concrete blocks, lumber, etc.). You are about one mile outside of the main population zone of your small town, and you come upon an accident scene […]

The idea that prolonged exposure to direct sunlight is harmful represents one of the main reasons why the use of sunblock/sunscreen has been widely promoted.  In particular, ultraviolet (UV) rays are known to cause damage to the skin upon direct contact which can lead to various adverse effects such as: premature aging, sunspots, wrinkles, formation of benign and malignant melanomas, cancer, and possibly death. However, […]

Hey I need someone to create me a info-graphic thats related to the periodic table of elements.  I need someone who knows chemistry very well and knows a lot about the perodic table ( to be specific the element thallium. I need to create a info-graphic that includes the information from the pdf below. You should be able to complete everything the rubrics says and […]

In this experiment, you will predict the three-dimensional geometry of a series of neutral molecules using the VSEPR theory. PROCEDURE Part 1: The Periodic Table 1. Use the Periodic Table of Elements to determine the elemental symbol, group number, and valence electrons for the elements listed in Table 1 on the Experiment 1 Data Sheet. Record this data in Table 1. 2. Use colored pencils […]

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Students are required to find a news article and write a short paper (400-600 words) explaining the article subject using chemistry terms/concepts discussed and learned in this course. This assignment is NOT to simply write a summary of an article. Be EXTREMELY CAREFUL to NOT plagiarize the article.  The complete article, or web address of the article, must be included within the submitted paper Word document file. Only Word formats (.doc or […]

1.     A stream containing 4wt% chromium (Cr), is contained in the wastewater from an absorber.  The wastewater stream is fed to a treatment unit that removes 95% of the chromium in the feed and recycles it to the plant.  The residual liquid stream leaving the treatment unit is sent to a waste lagoon.  The treatment unit has a maximum capacity of 4500 kg wastewater/hr.  If […]

Create an Outline Lab Report. This report will contain a title and the 5 elements of a lab report: Abstract, Introduction, Methods/Materials, Results, and Discussion. Our outline is going to be compiled of questions, instead of information. I understand that some of them might be repetitive, especially for Title and Introduction, and that’s ok. So for the 6 items I have listed above, you will […]

Write a research paper about one element from the periodic table of the elements. Select an element that you find interesting and tell the story of that element. In doing so, explain how the element relates to the elements around it in the periodic table and why the element is in that particular location on the table of elements. Below is a list of aspects […]

Write the balanced chemical equation for the reaction taking place in the flasks for part 1.  From the mass of KHP, calculate the moles of KHP used for each of 3 trials.  Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask.  Finally, calculate the molarity of your […]