Student 1 is titrating NaOH into HCl, the student pours 10.00 mL of 2 M HCl into an erlenmeyer flask and adds 2 drops of phenolphthalein indicator and 15 mL of deionized water. The student places the burette with NaOH inside of it above the acid solution and records that there are 30 mL of 1 M NaOH in the burette. The student turns the stopcock […]

You are to take a picture of your companies OSHA 300A form (Summary of Occupational Injuries and Illnesses). Companies are required to post this information from February 1st – April 30th each year. Then you are to calculate the total incident rate and the DART rate for your company to view the safety performance of your company. NOTE: You must include both calculations and show […]

 For today’s lab we are going to work with the Molecular Evolutionary Genetic Analysis program (https://www.megasoftware.net/home) to examine the phylogentic relationship of the cytochrome oxidase I (COI) gene in several ants. These 10 ants were collected by amateur entomolgists in south Florida, five were collected from one location (ants 1-5) and five were collected from another location (6-10). The DNA was extracted from all of […]

An example for a “low and slow” cooking method is a roast. I make roast, potatoes and carrots in the crockpot often with a busy household. The tough cut of meat needs to maintain its moisture and needs to cook on a low heat to maintain flavor and tenderness. The science behind this method is that you want to cook it above the “collagen-dissolving minimum” (McGee, 163). […]

Students will submit critical components of a hazard recognition program: They will iinclude a blank JHA instrument and describe the collection process: assign responsibility to associates and competent safety professionals. They will also submit a hazard recognition program that relies on employee participation: assign responsibilities based on authorized, competent and administrator level, duties, and training competency level and then design a hazard report card that […]

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 […]

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 […]

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A plant manufacturing nails and screws uses a large pool (volume = 10,000 L) to collect and treat its residual waste water before discharging it in a nearby stream.  The manufacturing process makes use of a strong acid (HCl) and a weaker one (phosphoric acid, H3PO4; pKa1 = 2.148, pKa2 = 7.20, pKa3 = 12.15), before discharging them in the pool for treatment (neutralization).  Once […]

As for people who have the habit of fitness Eric Decker Womens Jersey , and then they will be absolutely no strange to treadmill, an equipment. Many mistakes have been made by people on the treadmill, so you can not neglect it although it is simple. We should do the warm-up activities before stepping on the running machine. Muscles will be softer and make it difficult to […]