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Why does a substance gain or loss mass during a reaction
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The mass number of an atom is 122 amu and the atomic number is 51. How many neutrons are in the atom?
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How do you do scientific notation
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A scientist hypothesizes that the temperature at which a turtle's egg is incubated determines the sex of the offspring (whether it will be male or female). What is the independent variable?
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A machine shop worker records the mass of an aluminum cube as 176 g. If the density of aluminum is 2.7 g/cm3, what is the length of each side of the cube. (Volume of a cube is s x s x s)
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a) Write the complete electron configurations for each of the following elements: Ar, C, F, Na b) Write the short-hand (core) electron configurations for each of the following elements: V, Zr, Ba, Sn
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How do you solve problems like these?
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Mercury is the only metal that is a liquid at room temperature. Its density is 13.6 g/mL. How many grams of mercury will occupy a volume of 95.8 mL?
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Subject: Chemistry, Science Synthesis reaction and Decomposition reaction Which of the following statements best explains the type of chemical reaction represented by Maya's picture? It is neither a s
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A cone with the mass of 6g has a radius measuring 5 cm and a height of 2 cm . What is its density
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Which risk mitigation framework allows scope for research and acknowledgement for risk mitigation?The framework, used by the management in most companies, provides the option of research and acknowled
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How to Draw the Dot Structure for NF3? A Draw the Lewis structure for NF3. A step-by-step explanation of how to write the Lewis Dot Structure for NF3 (Nitrogen Trifluoride). For the NF3 Lewis structur
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help me answer this chemistry question please
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I need help with numbers 8, 9, 10, and 11 with shown work.
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What is a solution?
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I need to solve these with Excel. I did a. Could you explain me b and c in detail please?
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Please answer these two questions below. https://www.youtube.com/watch?time_continue=171&v=yi0hwFDQTSQ&feature=emb_logo At the end of the video you were asked to develop a hypothesis regarding
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Please answer these two questions below. https://www.youtube.com/watch?time_continue=171&v=yi0hwFDQTSQ&feature=emb_logo At the end of the video you were asked to develop a hypothesis regarding
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Complete pages 6-14 exclude page 9 and show work
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I don’t I understand pls help
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I completed all questions but I would like someone to go over my work.
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Using the experimental value for the specific heat of gold at 155 K of cv/R =2.743, estimate the Einstein characteristic temperature (in K) - use MW_{Au} = 197.0MW Au =197.0 kg/kmol.
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Equivalence Point for Titration #1: 24.96 mL Equivalence Point for Titration #2: 25.40 mL Equivalence point for Titration #3: 25.20 mL; midpoint pH Titration #3: 9.80 QUESTIONS - Please answer using
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In this assignment you will first identify your selection. Give the history of the person, his/her research that won them the Nobel Peace Prize. Also, share the process as to how the winner is chosen.
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Please READ and REVIEW the DETAILS of the ENTIRE assignment. The assignment must be written professionally, scholarly, paraphrased, cited and with completed reference(s), and MUST include every detail
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How can you prepare 250 ml, 0.1N HNO3 solution from 35% HNO3 and 1.26 g/cm3 density?
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Draw and label the structure of the compound that is corresponding to the following spectroscopy data (Note: s=singlet, d=doublet, t= triplet, qrt=quartet, qnt=quintet, sxt=sextet, m=multiplet): i) Mo
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1. A concentrated phosphoricacid solution is 85.5% H3PO4 by mass and has a density of 1.69 g/mL at 25°C. What is the molarity of H3PO4? What is the mole fraction of urea, CO(NH2)2, in a solution prepa
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You were recently hired as an occupational safety and health consultant for Gemstone Fabricators, a medium-sized manufacturing facility that makes stainless steel counters, containers, and carts for t
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The questions are in the file I attached.
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Select one Nobel Peace Prize winner from the Scientific Field. This person may be current or from the past. It’s your choice. Include in your discussion who it is, why you chose this person AND one in
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the statement is false. (10 points) In a balanced chemical equation, coefficients indicate the relative number of molecules while the subscripts indicate the number of atoms in a molecule. Correct co
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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) tr
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I need someone to help me take my general Chm 2 college exam. It will be proctered however I will be able to send you pictures of the exam and you will have to send me the responses. The exam is on We
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Think of a commonclosed system, like a pot of water boiling with the lid on it.Can you think of another closed system that we experience in daily life? Describe how pressure, temperature, number of pa
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The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from the reaction between sodium metal and fluorine gas. Which properly represents the balanced c
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As a member of a project team with the National Environmental Agency(NEA), you have have been given a project called "Water Technology and Our Life". The objective of this project is to create awarene
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Dr. Walter White (Walt), a high school chemistry teacher and brilliant chemist, is diagnosed with lung cancer and urgently needs money for treatment. With the help of his former student, Jesse Pinkman
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You make $12.75 per hour and get time and a half for all hours over 40 in a week. They withhold 32% from your check for taxes and other things. If you work 53 hours in one week what will be your take
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hello. I would like your help with a polymer chemistry HW.
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CRM at Minitrex Case Study on pages 243-245 Read the CRM at Minitrex Case Study on pages 243-245 in the textbook. Answer the Discussion Questions at the end of the Case Study. Your responses must be c
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This activity is designed to introduce a convenient unit used by chemists and to illustrate uses of the unit. Part I: What Is a Mole And Why Are Chemists Interested in It? Counting things is a normal
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Temperature and heat are important concepts with respect to understanding energy.Describe the difference between the two terms. How are the scientific definitions different than the ways we use these
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Isotopic abundance Calculation and Limiting reactions worksheet: 1.Naturally occurring magnesium has three isotopes with 12,13,14 and neutrons. Determine the mass numbers and write the symbols of thes
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1. In your own words, describe the concept of specific heat capacity and the effects that it has on temperature changes. Give an example of specific heat capacity that you see in your everyday life. W
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***Doctorate Level Questions*** No Plagiarism....Paraphrase the content, and provide Citations and at least TWO Reference Sources for each question provided....Please provide a substantive response fo
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Scope: Practical Connection Assignment – Written Assignment where you will reflect on course concepts and your practical connection to a working environment. Only start to write an Outline to no more
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Scope: Practical Connection Assignment – Written Assignment where you will reflect on course concepts and your practical connection to a working environment. Only start to write an Outline to no more
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Discussion Question 1 In molecular biology and genetics, mutations are accidental changes in a genomic sequence of DNA. Using the South University Online Library or the Internet, research genetic muta
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A 24.2 L sample of Hydrogen gas is held at 1.5 atm and 20 oC, how many grams of the gas are present
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