chem lab exp. 1

chem lab exp. 1 - Laboratory 1. Density of Solids and...

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Laboratory 1. Density of Solids and Metric Measurement . Name: Norkhairin Yusuf Partner: Azizah Ahmad Section: Section 40, Monday 2 PM Performed: 8 August, 2008 Submitted 15 August, 2008 Laboratory Instructor: HongMei Yuan Your Signature ___________________________________
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Data Table I. Data for the determination of the volume/mass of a regular solid. Unknown ID: 79 Dimension Measurement (cm) Length, l 2.50 Diameter, d 1.20 Radius, r = (d/2) 0.60 Mass determined: 27.848 g Table II. Density of a regular solid. Volume 3.0 mL Mass 27.848 g Density 9.3 g/cm 3 Table III. Measurement of Volume by Displacing a Liquid Graduated Cylinder Used Cylinder 1: 100 mL Starting Volume 51.0 Final Volume 54.0 Volume of Solid 3.0 Mass of Solid (from Part A) 27.848 g Density of Solid 9.3 g/cm 3 Table IV. Density of an Irregular-Shaped Solid Unknown ID: 15 Volume Readings (mL) Starting Volume 48.0 New Volume 54.0 Volume of Solid 6.0 Mass determined: 56.557 g Density of Solid: 9.4 g/cm 3
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Table V. Density of Glass Beads or Metal Shot Mass : Vial, Cap and Shot 18.051 g Mass : Vial and Cap 14.810 g Mass : Shot or Beads 3.241 g Graduated Cylinder Used 10 mL Volume Readings (mL) Starting Volume 5.0 New Volume 6.4 Volume of the Shot or Beads 1.4 Mass determined: 3.241 g Density of the Shot or Beads: 2.3 g/cm 3 Table VI. Thickness of Metal Foil Width 8.5 cm Length 13.1 cm Mass 0.495 g Thickness 1.6 x 10 3 cm
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Purpose The purpose of this lab was to become familiar again with the use of metric measurements that are often used in the laboratory work, as well as to learn the right techniques in using laboratory instruments, and also to measure the density of few selected solids which are, regularly-shaped solid, irregularly-shaped solid, glass beads and thickness of a metal foil. Introduction Metric system or SI (Systeme Internationale) units are used by the world community entirely in sciences. The metric system is based on using powers of ten, 10 x . Derived quantities are those that use two or more of the basic units of the metric system in various combinations. One of the most frequently used is density, which is defined as the ratio of mass of a substance to its volume. density = __mass__
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chem lab exp. 1 - Laboratory 1. Density of Solids and...

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