heat evolved when magnesium reacts with dilute acids. Planning What I am going to do I am going to find out how much heat is given out when magnesium reacts with a variety of dilute acids. In order to make comparisons between the acids‚ I shall use my results to work out how much heat would be given out if 1 mole of magnesium reacted with an excess of each acid. The acids I shall use are hydrochloric acid‚ sulphuric acid‚ nitric acid and ethanoic acid. What I already know Magnesium reacts with most
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EXPERIMENT 3 Name: Flame Tests & Electron Configuration Pre-Laboratory Questions and Exercises Due before lab begins. Answer in the space provided. 1. Write electron configuration for the alkali metals Li‚ Na‚ K‚ and Rb. Li ____He 2s1_____________________________________________ Na ____Ne 3s1______________________________________________ K _______Ar 4s1___________________________________________ Rb _______Kr 5s1___________________________________________ 2. Write the electron configuration
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1. Determining the concentration of KMnO4 from the solution created by the stockroom. 16H+ + 2MnO4- (aq) + 5C2O42- (aq) → 2Mn2+ (aq) + 10CO2 (g) + 8H2O (l) Volume of potassium manganate (KMnO4) = 32.5 mL Mass of Sodium Oxalate (NaC2O4): 0.104 [KMnO4] Calculation: = (0.104g of NaC2O4)(1 mol NaC2O4 /134.0g)(2 mol KMnO4 / 5 mol NaC2O4)(1/32.5 mL)(1000 mL /1L) = 0.00955 M KMnO4 2. Using the standardized concentration of KMnO4 calculated above to find the mass percentage of the oxalate ion Equation:
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indicated by a very pale pink color. To calculate the molarity of NaOH‚ the following equation was used MNaOH x VNaOH = MKHP x VKHP therefore the molarity was .125 M. INTRODUCTION This lab experiment covers the preparation of standard solution and the acid/base titration. The first part of the lab is to prepare a standard solution of Potassium hydrogen per. A standard solution is a solution of known concentration‚ in which it is prepared using exacting techniques to make sure that the molarity
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Breastfeeding vs. Formula Bottle-feeding Every mother of a newborn baby must make a very personal decision when it comes to how they are going to feed their infant. I was faced with that decision 3 years ago when I had my first son who I named Ethen. It was one of the very hardest decisions I had to make. I had to consider all the good benefits of breast feeding as well as the benefits of formula bottle-feeding‚ but the good benefits of breastfeeding outnumbered the bottle feeding ones. I finally
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developing a theory‚ theorists must construct their theory so that it can be judged by this certain criteria. This criteria is made out of: 1.) empirical validity‚ 2.) its logical consistency‚ 3.) scope‚ and parsimony‚ 4.) testability as well as 5.) The usefulness and 6.) the policy implications (Akers and Sellers‚ 5). It is important for a theory to possess empirical validity because without it‚ theorist would be unable to determine whether said theory could be accepted or dissolved with the evidence that
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Lab Report # 11 By: Andrew Hoitt CHEM 105 Lab 11/29/2012 Lab # 11 – Acid - Base Titration Introduction: The purpose of this lab is to determine the molarity (M) of an unknown HCl solution. A NaOH solution will be made and its molarity calculated. A sample of the NaOH solution will be titrated against the unknown HCl solution to calculated the volume needed to neutralize it. With these volumes the unknown molarity can be calculated. Theory: Solutions
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Int. J. Chem. Sci.: 7(4)‚ 2009‚ 2617-2623 NITRIC OXIDE RADICAL SCAVENGING ACTIVITY OF AQUEOUS EXTRACT OF TERMINALIA BELERICA BARK AKHLESH SINGHAI*‚ GOVIND NAYAK‚ ASHOK BUDHWANIa and ASHISH SINGHAIb Lakshmi Narain College of Pharmacy‚ BHOPAL (M.P.) INDIA a Daksh Institute of Pharmacy‚ CHHATARPUR (M.P.) INDIA b VNS Institute of Pharmacy‚ BHOPAL (M.P.) INDIA ABSTRACT In the present investigation‚ am attempt has been made to investigate the in vitro antioxidant potential of aqueous extract of
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Matter: A Comprehensive Overview of Nitrous Oxide Abuse Ryan Ardelle Anatomy & Physiology‚ Period 3 Mr. Syvret Due: March 14‚ 2013 SUBSTANCE OVERVIEW The issue of inhalant abuse is a multifaceted problem‚ stretching across many communities and locales in the entirety of the United States. Inhalants as a class of drug vary widely‚ ranging from volatile solvents and aerosol propellants‚ to more broadly‚ any drug delivered by inhalation. Nitrous oxide straddles these categories‚ as it finds use
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The Oceanic Corporation (Determining the Cost of Capital) Larry Stone wants to estimate the firm’s hurdle rate because it is a benchmark for how well the company needs to do on a project in order to at least break even. The higher the hurdle rate‚ the riskier the project will have to be and the lower the hurdle rate is‚ the safer the project will be for a company. A company should strive for a financing mix that minimizes the hurdle rate and matches the assets being financed. If there
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