Written Assignment 7: Energy and ThermochemistryAnswer all assigned questions and problems, and show all work. 1. Consider this reaction: 2CH3OH(l) + 3O2(g) → 4H2O(l) + 2CO2(g) ∆H = –1452.8 kJ/mol a. Is this reaction endothermic or exothermic? (2 points)b. What is the value of ∆H if the equation is multiplied throughout by 2? (2 […]
Objective: Organize your thoughts and the main points of your research for your final presentation Assignment Instructions: To help you complete Assignment 3: The Presentation, you will first submit an outline to organize your thoughts and main points. Your outline should be formatted a specific way and must contain the following elements as described […]
10165 – CHEM – 131 – Section 001 – Spring 2016 – General Chemistry Lec II Question 1 Correct Mark 3.00 out of 3.00 [removed]Flag question Question text All of the following are clues that a chemical reaction has taken place except The reactant is smaller. a.A flame occurs. b.A color […]
Quantum mechanics Important Guidelines: ·Show all the major solution steps ·Always end your answers with the proper units Solve and submit the following problems: 4. (I) If an electron’s position can be measured to an accuracy of 2.0 x how accurately can its speed be known? 6. (I) The boson, discovered in […]
1. The formula of chloric acid is HClO3. a) true b) false 2. Bases react with active metals to produce hydrogen gas. a) true b) false 3. Aqueous solutions of acids and bases conduct electricity. a) true b) false 4. The piece of lab equipment shown is used to dispense precise volumes. What is […]
1. 50 g of soil is extracted with NH4Cl (ammonium chloride) and the extract diluted to 0.5 liter. The solution contained the following cations: 120 ppm Ca+2 24 ppm Mg+2 1 ppm Na+ 13 ppm K+ a. Estimate the CEC (meq/100g) b. The soil pH is 7.5. Was your estimate of CEC a good […]
Express 23,000,000,000 in exponential form, using standard scientific or “e” notation (for example, 105 = 1.05e2). Enter the correct number…
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i need it as soon as possible max 3 hours its chemistry 112 pre questions 6 total for one experiments the questions are the first pic which i have attached and the rest of the pics are the experiment sheet please don’t sign the hand shake until you 100 percent sure that you can do […]
My products are: Personal Hygiene: Colgate toothpaste Household Cleaning: Lysol PROJECT Many of the day-to-day products we use for home maintenance, personal hygiene and health care are the result of tremendous investments of research time and money to create products that serve a useful and/or desirable purpose. There is a whole realm of chemistry called […]
