ST activity - Orgo II

PAP Chemistry-2903012-42100P-1/ Le Chatelier's Principle/ Lesson 128 2. Zinc (Zn) granules react slowly with dilute hydrochloric acid (HCI), but much faster if the acid is concentrated. Zn(s) 2HCI(aq)ZnCl2(aq) + H2(g) Zinc + Hydrochloric Acid Zinc Chloride + Hydrogen What causes the reaction to proceed faster with concentrated acid? The concentrated hydrochloric acid causes more hydrogen gas to be produced. The pressure of hydrogen gas molecules increases as concentration increases. The concentrated hydrochloric acid molecules move faster than in dilute acid. There are more collisions between the zinc and concentrated hydrochloric acid. PREVIOU

Dangerous Paint Stripper Jessica has a summer job working for the city parks program. She has been using a cleaner called “Graffiti Gone” to remove graffiti from the bathrooms. She has to take a lot of breaks, because the chemical makes her throat burn. It also makes her feel dizzy sometimes, especially when the bathrooms don’t have very many windows. On the label, she sees that the cleaner has methylene chloride in it. She feels like she’s managing to get the work done, but she is worried about feeling dizzy. She wants to find out more about this chemical, what harm it can cause, and whether there are safer ways to do this work. Questions for following story. 1. What went right in this situation? 2. What went wrong in this situation? 3. What steps should be taken in this workplace to make sure employees are better protected and prepared the next time?

Can you fill the rest of the chart please

Complete the sentence to make it true. The single most important contribution to the stability of a water soluble globular protein's conformation appears to be the sum of free energies of formation of many weak interactions among the hundreds of amino acids in a protein. entropy increase from the decrease in the number of ordered water molecules forming a solvent shell around the unfolded protein. sum of free energies of formation of many weak interactions between a protein's polar amino acids and surrounding water. maximum enthalpy increase from ionic interactions between the ionized amino acids in a protein. stabilizing effect of hydrogen bonding in a protein between the carbonyl group of one peptide bond and the amino group of another

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Element: Mercury

Please help ASAP Interpret these graphs

what is a reason why company leaders would add melamine to their product to make the protein content appear higher than the actual amount of the product?  Describe two possible reasons for why food safety inspectors often use an overall nitrogen content test, instead of Bradford assay, to determine the protein content in a product.

Estrogens are female sex hormones, the most potent of which is B-estradiol. OH AYA Но B-Estradiol In recent years, chemists have focused on designing and synthesizing molecules that bind to estrogen receptors. One target of this research has been nonsteroidal estrogen antagonists, compounds that interact with estrogen receptors and block the effects of both endogenous and exogenous estrogens. A feature common to one type of nonste- roidal estrogen antagonist is the presence of a 1,2-diphenylethylene with one of the benzene rings bearing a dialkylaminoethoxyl substituent. The first nonsteroidal estrogen antagonist of this type to achieve clinical importance was tamoxifen, now an important drug in the treatment of breast cancer. Tamoxifen has the Z configuration shown here. NMeg A B NMeg ? ОН Tamoxifen Propose reagents for the conversion of A to tamoxifen. Note: The final step in this synthesis gives a mixture of E and Z isomers.

Select the single best answer. The amino acid glycine can be condensed to form a polymer called polyglycine. Identify the structure below that represents one monomer unit of polyglycine. H. N-C- H-C-H H. N-C エ ーCl HICI I HICI I エ ーZ HIN HIN

Read and interpret the following information using the following abstract from a scientific journal article. In 2-3 sentences, summarize what you understand from this research

Stearic acid (C18H3602) is a fatty acid, a molecule with a long hydrocarbon chain and an organic acid group (COOH) at the end. It is used to make cosmetics, ointments, soaps, and candles and is found in animal tissue as part of many saturated fats. In fact, when you eat meat, you are ingesting some fats containing stearic acid. Determine the AHrxn for this combustion given the following information: AH of stearic acid = -948 kJ/mol, AHf of CO, = -394 kJ/mol, AHf of water = -242 kJ/mol. Calculate the heat (q) released in kJ when 261.8 g of stearic acid reacts with 903.9 g of oxygen. Enter a positive number to 0 decimal place.

LEARNING COMPETENCY: Describe some simple reactions of organic compounds; combustion of organic fuels, addition, condensation, and saponification of fats. (STEM_GC110Cllg-j-9). SITUATION: You are a Grade 12 research student in your school and you are researching on the potential of a certain plant that can be an additive in making a hand soap. Your task is to write the Methodology of the Research by indicating the step-by-step procedure of preparing a hand soap. TASK: Research for a procedure in the preparation of hand soap. Write the materials and procedures and answer the guide questions below. GUIDE QUESTIONS: 1. What are other oils, besides coconut, that are used to make bath soaps? 2. Based on your research, why is potassium hydroxide used instead of sodium hydroxide to make certain kinds of soaps? 3. Based on your research, what is a micelle? 4. What is the chemical name of the most common fatty-acid molecule found in coconut oil? 5. Describe the process of saponification of…

HW9 #15

Identifying organic functional groups Name the family to which each organiC compound belongs. The first answer has been filled in for you. compound family ester CH,– CH,– -0–C – CH, CH; CH, — о — с —Н CH, NH, – C=O CH, Check Explanation O2021 McGraw Hill LLC. All Rights Reserved. Terms ||