following calculations and be careful to follow significant figure rules in each calculation. 1. Part I: Density of Unknown Liquid 1. Calculate the mass of the liquid for each trial. (Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid.) Trial 1 36 - 25.5 = 10.5 Trial 2 36.5 - 25.5 = 11 Trial 3 36.9 - 25.5 = 11.4 2. Calculate the density of the unknown liquid for each trial. (Divide the mass of the liquid calculated above by the volume of
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the virtual lab. Be sure the data table is viewable. Right-click (PC) or Command-Click (Mac) on the table and select print. Part I: Density of Unknown Liquid Trial 1 Trial 2 Trial 3 Mass of Empty 10 mL graduated cylinder (grams) 26.0 Volume of liquid (milliliters) 8.5 Mass od graduated cylinder and liquid (grams) 30.7 Part II: Density of Irregular-Shaped Solid Trial 1 Trial 2 Trial 3 Mass of solid (grams) 39.67 39.25 42.126 Volume of Water (milliliters)
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hydrometer is an instrument to measure the relative density of liquids. It consists of a tube with a bulb at one end. Lead shots are placed in the bulb to weigh it down and enable the hydrometer to float vertically in the liquid. In a liquid of lesser density‚ a greater volume of liquid must be displaced for the buoyant force to equal to the weight of the hydrometer so it sinks lower. Hydrometer floats higher in a liquid of higher density. Density is measured in the unit of g cm-3. 4. SHIP
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is viewable. 2. Right-click (PC) or Command-Click (Mac) on the table and select print. Part I: Density of Unknown Liquid | | Trial 1 | Trial 2 | Trial 3 | Mass of Empty 10 mL graduated cylinder (grams) | 25.50 | 25.50 | 25.50 | Volume of liquid (milliliters) | 8.10 | 8.30 | 8.10 | Mass of graduated cylinder and liquid (grams) | 35.50 | 36.00 | 35.50 | Part II: Density of Irregular-Shaped Solid | Mass of solid (grams) | 38.285 | 42.345 | 42.577 | Volume of water (milliliters)
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MDM4U – Grade 12 Data Management – Exam Unit 1: One Variable Analysis Types of Data Numerical Data Discrete: consists of whole numbers Ie. Number of trucks. Continuous: measured using real numbers Ie‚ Measuring temperature. Categorical Data: cannot be qualitatively measured Nominal: Data which any order presented makes sense Ie‚ Eye Colour‚ Hair Colour. Ordinal Data: better if sorted or ordered Ie‚ Date and Time‚ scalar options Collecting Data Primary: collected by yourself Secondary:
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Jashandeep Gill Gammellos Chemistry Density is one of the fundamental principles of physics. Density is the reason why a plank of wood floats on water while a piece of metal several times smaller will sink. Density of an object is measured in g/cm³ or g/cc. The equation is D=M/V‚ D being the density of the object‚ M being the mass of the object‚ and V being the volume of the object. Mass is the space an object takes up. It is the amount of matter present in an object. Mass is measured using
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Probability Games Walter J Mahoney MTH 157 1/20/2013 Andrea Hayes Probability is a fascinating math concept. It can be applied in many aspects of our students’ daily lives. As the world of technology continues to grow‚ teaching of many math
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11‚ 2013 Title: Laboratory Techniques and Measurements Purpose: To gain knowledge about the International System of Units and use it to determine volume‚ mass‚ length‚ and temperature. To learn to use these forms of measurement to determine density and concentration‚ as well as learning basic lab equipment to create dilutions. Procedure: Part 1: After reading the various information given‚ I gathered different objects and measured them using both centimeters and millimeters then converted
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g|2.2 g| 1 Rimadyl Pill|2 g|2.1 g| Data Table 5 – Density measurements |Mass A|Mass B|Mass A - B||| Object|GraduatedCylinder + Substance|GraduatedCylinder|Substance|Substance Volume|DensityM/V| Water|21.7 g|16 g|5.7 g|5 mL|1.14 g/mL| Isopropyl alcohol|21 g|16 g|5.0 g|5 mL|1 g/mL| Saturated salt solution|22.6|16 g|6.6 g|5 mL|1.32 g/mL| The salt solution should be of greater density than that of pure water. Data Table 6 – Densities of irregular objects |A|B|B - A||| Object|GraduatedCylinder
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relationship between mass‚ volume‚ and density of matter. 3. Use the particle theory to explain the differences between solids‚ liquids‚ and gases. 4. Comment on the accuracy of the statement below. Describe some exceptions to the statement if there are any. In general‚ solids are denser than liquids‚ and liquids are denser than gases. 5. Use the particle theory to explain why changing the temperature of a fluid can also change its density. 6. The density of a fluid usually decreases as the temperature
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