of ethanol is 0.789 g/mL. Find the mass of a sample of ethanol that has a volume of 150.0 mL. 6. 30.0 g of each of the following acids are needed. Find the volume of each that must be measured out in a graduated cylinder. A. hydrochloric acid (HCl)‚ density = 1.164 g/mL B. sulfuric acid (H2SO4)‚ density = 1.834 g/mL C. nitric acid (HNO3)‚ density = 1.251 g/mL 7. A rectangular block of lead (Pb) measures 20.0 mm X 30.0 mm X 45.0 mm. If the density of Pb is 11
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conducted using granular tin and hydrochloric acid. This mixture provided both a source of electrons and protons1. The electrons worked as the reducing agent in this mechanism1. Granular tin was chosen over a single plate of tin due to the fact that it would take much more time and effort to fully dissolve a single plate of tin. A plate of tin would be more bonded to each other and less likely to be reactive. With the addition of the concentrated hydrochloric acid‚ it was important to add it slowly
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Chemistry IGCSE Paper 6 revision guide You can change the temperature and concentration used (not both at the same time though) You need to keep the diameter of the conical flask the same‚ if it is thinner then the cross will disappear sooner‚ the cross also has to be the same‚ volumes too (This set up is mostly if you want to test the gases‚ otherwise you can use the standard set up) The limestone cycle: 1. Burn the limestone
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lab was to test different antacids‚ to find out which would be the most effective to take. Stomach acid problems come from a overproduction‚ and build up of gastric acid (HCl). In order to determine which antacid is the more effective‚ four different brands of antacids were chosen‚ and tested. The purpose of an antacid is to balance out the pH inside a person’s stomach. PH is the measurement of molar concentration of hydrogen ions that are present in the solution (N. Tro‚ 733-735). If this experiment
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PHYSICAL PROPERTIES OF THE PERIOD 3 OXIDES These pages explain the relationship between the physical properties of the oxides of Period 3 elements (sodium to chlorine) and their structures. Argon is obviously omitted because it doesn’t form an oxide. A quick summary of the trends The oxides The oxides we’ll be looking at are: |Na2O |MgO |Al2O3 |SiO2 |P4O10 |SO3 |Cl2O7 | | | | | |P4O6 |SO2 |Cl2O
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known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry. This experiment determines the stoichiometry of a reaction of magnesium and hydrochloric acid. Magnesium reacts with magnesium is react with hydrochloric acid to form hydrogen gas. The aim of this experiment is to determine the value of x in the following equation: Mg + X HCl → MgCl2 + X/2 H2 A known amount of magnesium is reacted with a large excess of HCl‚ and
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20/04/2013 Pepsin Experiment Experiment protocol to test the effect of temperature on the enzyme pepsin Lab Day: Tuesday Lab Time: 10-1pm Are you in Lab G20 (furthest from BSB Student Office) or Lab G21 (closest to BSB Student Office)?: G20 Demonstrator Name: Tamsin Peters Names of Group Members: Roanna Humphries Daniel Markus Nicholle Cooke-Hayes Dean Do Rosario Pepsin Name of Enzyme You are Investigating: Table of Contents Table of Contents ........................
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Araldite® bonding Surface preparation and pretreatments Working directions for the surface preparation essential for optimum adhesion between structural materials bonded with Araldite® adhesives. Araldite® adhesives form extremely strong and durable bonds with plastics‚ metals‚ glass‚ rubber and many other materials. Designers in every sphere of industry increasingly find that bonding with Araldite® provides the answer to production problems posed by new materials‚ new uses of existing materials
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w w w e tr .X m eP e ap UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education .c rs om *2925136620* CHEMISTRY Paper 3 (Extended) 0620/33 May/June 2012 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams‚ graphs
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Laboratory report Shae Aquino Chemistry 161L February 25‚ 2014 Conductivity of Solutions of Ionic and Covalent Compounds Purpose The purpose of this experiment was to use electrical conductivity on ionic‚ molecular acids‚ and covalent compounds in order to determine the properties of each compound. Introduction In chemistry‚ the term of an aqueous solution is defined as a substance that is soluble in water. For example‚ sodium chloride (NaCl) dissolves in water‚ or other
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