chart phenolphthalein scoopula eye-dropper digital pH meter magnesium ribbon calculator unknown II substance forceps sodium bicarbonate Procedures: Test the pH of the Unknown substances with litmus paper and pH indicator paper and match to color chart Test the Unknowns with phenolphthalein solution Add magnesium ribbon to Unknowns to see if any reactions occur Data: (See Other Pages) Conclusion: In the Acid and Base Lab‚ we had to test the pH value of two unknown substances to determine
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Formal Lab Report | Chemistry | | Student name: Sara Hattar Grade: 10 ”C” | | Teacher: Christine Ziadat | | | Title: Investigating the effects of changing the concentration of an acid on the rate of reaction between HCl and Magnesium. Aim: In this experiment we are going to see the effects of using three different concentrations of HCl when added to Magnesium metal on the rate of reaction. Hypothesis: If the concentration of the acid increased in reaction between HCl (the acid)
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Inorganic-I Lab Manual http://www.uap-bd.edu Department of Pharmacy‚ University of Asia Pacific‚ Bangladesh Fall 2013 Pharm 112 Inorganic Pharmacy-I Lab Course Teacher: Muhammad Credit 1 Shahdaat Bin Sayeed Website: https://sites.google.com/a/uap-bd.edu/sbspharmacy/ Cell: +8801713459747‚ E: shahdaat.pharm@uap-bd.edu Lab attendant: Md. Abul Halim [01727565062] Name of the Experiment: Qualitative analysis of Inorganic compounds/Drugs Lab 1: Principle of identification
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Question 1 of 34 3.0/ 3.0 Points What mineral is specimen A? A.gypsum B.calcite C.quartz Correct D.pink microcline (feldspar) Answer Key: D Question 2 of 34 3.0/ 3.0 Points Specimen B has A.a dull or earthy luster. B.a silky luster. C.a metallic luster. Correct D.a glassy luster. Answer Key: D Question 3 of 34 3.0/ 3.0 Points The hardness of Specimen B is A.< 2.5 B. 2.5–3.5 C.3.5–4.5 D.4.5–5.5 Correct E. > 5.5 Answer Key: E Question 4 of 34
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The purpose of lab number thirteen was to examine the response of the daphnia to a chemical stimulant. Also examined was how human resting heart rates differed from the daphnia’s. Stimulants are any substances that raise the levels of activity in the body. Stimulants could be a number of things such as physical or chemical. Physical stimulus usually deal with something that affects the five senses such as sight‚ hearing these could be attributed to loud noises or too much light going into your eye
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Margaret E. Vorndam‚ M.S. Version 42-0038-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable
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molecule structure to be triphenylmethanol. Introduction: The Grignard reagents are alkyl magnesium halides‚ R-Mg-X were first introduced in 1900. These reagents are usually prepared by reacting one atom with one molecule or by other means magnesium and alkyl halide in the presence of dry alcohol free ether.
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Abby Goldschmidt Honors Biology 2° Mrs. Gempel September 3‚ 2015 Daphnia Lab Results Paper Abstract The goal of the study was to observe the effects of multiple chemicals on a Daphnia magna’s heart-rate compared to a control (pond water). The different chemicals were caffeine and alcohol. The heart-rate was the main variable in this experiment. The Daphnia’s heart-rate was observed for 15 seconds and then multiplied by 4 to show its heart-rate in one minute. This was repeated 4 times for each
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r Lab Report 5 Introduction to the Classes of Chemical Reactions Course: Chem. 1151L‚ Tuesday & Thursday June 23‚ 2011 Mr. Nasir Uddin Pre Lab Questions: 1. CaBr2 (aq) + K3PO4 (aq) → CA(PO4)2(S) + KBr (aq) = Ca3(PO4)2 + 6 KBr Double Replacement 2. Li(s) + O2(g) = Li2O(s) =2 Li2O Decomposition 3. CH4 + O2 = CO2 + H2O = CO2 + 2 H2O Combination 4. AgBr(s) = Ag (s) + Br2(l) = 2 Ag + Br2 Combination 5. Mg(s) + H2SO4 (aq) = MgSO4 + H2
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Lab #5 Chemical Reactions & Balancing Equations Objectives Observe and classify several chemical and physical changes. Give evidence for the occurrence of a chemical reaction. Write a balanced equation for a chemical reaction. Identify a reaction as a combination‚ decomposition‚ replacement‚ or combustion reaction. Background Physical properties can be observed without changing the chemical composition of the substance. Common physical properties that can be measured without changing the chemical
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