Lab Worksheet Part I: Density of Unknown Liquid Trial 1 Trial 2 Trial 3 Mass of Empty 10 mL graduated cylinder (grams‚ g) [1] Volume of liquid (milliliters‚ mL) [2] Mass of graduated cylinder and liquid (grams‚ g) [3] Part II: Density of Irregular-Shaped Solid Mass of solid (grams‚ g) [4] Volume of water (milliliters‚ mL) [5] Volume of water and solid (milliliters‚ mL) [6] Part III: Density of Regular-Shaped Solid
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March 4‚ 2010 Egg Buoyancy and Density: Can you make an egg float by changing the density of water? If you put an egg in tap water‚ it will sink to the bottom. If you add enough salt‚ the egg will float to the surface. Density is the mass or volume of an object. It’s easier to think of it as the thickness of the object. Buoyancy is the force that allows an object to float. I performed a fun experiment to see how increasing density of water could make an egg float or submerge.
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mass‚ length‚ and temperature of a wide variety of items. To learn how to calculate density and concentration of dilutions. Procedure: I used a ruler‚ thermometer‚ and scale to take measurements. I used a graduated cylinder‚ short step pipet‚ scale‚ and ruler to determine volume and density. I used a volumetric flask‚ graduated pipet‚ pipet bulb‚ scale‚ and glass beaker to determine concentrations and densities of various dilutions. Data Tables: |Data Table 1: Length
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Archimedes’ Principle The buoyant force on a submerged object is equal to the weight of the fluid displaced. This principle is useful for determining the volume and therefore the density of an irregularly shaped object by measuring its mass in air and its effective mass when submerged in water (density = 1 gram per cubic centimeter). This effective mass under water will be its actual mass minus the mass of the fluid displaced. The difference between the real and effective mass therefore
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inside a bubble 4.0 m below the surface of the liquid. Density of alcohol = 806 kg m-3 1.4 atm Figure 1 Figure 2 4. Blaise Pascal duplicated Torricelli’s barometer using a liquid of density 984 kg/m3 as the working liquid (Fig. 3). What was the height h of the liquid column for normal atmospheric pressure? 10.5 m 5. A frog in a hemispherical pod finds that he just floats without sinking in a fluid of density 1.35 g/cm3. If the pod has a radius of 6.00 cm and negligible
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lowers the market value to ensure proper popping‚ the density also plays a part in the popping that should occur. Purpose: To perform the quality control tests and competitive analysis in the popcorn industry‚ and see if the kernels meet industry standards. Part A: Measurement of Density Procedures: Weigh 10 kernels of unpopped popcorn. Find the volume of those kernels using water displacement in a 10-ml graduated cylinder. Calculate density of sample(D=M/V). Repeat 3 times using new a new
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will be a significant difference in velocity when compared to their individual velocity. Gradiomanometers: This type of production logging tool measures fluid densities of subsurface fluids. It detects the source of oil/water/gas in the production profile due to the difference in density. It uses a scale from 0.3- 1.2‚ with 1 being the density of
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CH3041 Chemical Engineering Unit Operations II Lau Wai Man‚ Raymond Jiang Rongrong Office: N1.2-B2-32 Office: N1.2-B1-08 Phone: 6316 8830 Phone: 6514 1055 Email: wmlau@ntu.edu.sg Email: rrjiang@ntu.edu.sg Course Outline • Particulate Technology – Particle size analysis – Packed bed – Gas-solid fluidized bed – Gas-liquid-solid fluidized bed • Filtration • Crystallization • Drying Covered by Prof. Jiang Rongrong Grading • Continuous Assessment – 30% Quizzes • Exam – 70% Final
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Graphene based Supercapacitors with Improved Specific Capacitance and Fast Charging Time at High Current Density Santhakumar Kannappana‚ Karthikeyan Kaliyappanb‚c‚ Rajesh Kumar Maniand‚ Amaresh Samuthira Pandianb‚ Hao Yange ‚ Yun Sung Leeb‚ Jae-Hyung Janga‚f and Wu Lua‚e* a) Department of Nanobio Materials and Electronics‚ Gwangju Institute of Science and Technology‚ Gwangju 500-712‚ Republic of Korea. b) Faculty of Applied Chemical Engineering‚ Chonnam National University‚ Gwangju‚ 500757
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25.3 °C | 25.2 °C | Temperature of hot water and metal in hot water bath: | 100.3 °C | 100.3 °C | 100.3 °C | Final temperature reached in the calorimeter: | 27.5 °C | 32.2 °C | 28.0 °C | Calculations: Part I : 1.) m = mass of water = density x volume = 1 x 26 = 26 grams ΔT = T(mix) - T(water) = 38.9 - 25.3 = 13.6 q(water) = 26 x 13.6 x 4.18 q(water) = 1478 Joules 2.) qmetal = -205 J = 15.363 g X c X (27.2 - 100.3 C) c = 0.183 J/gC Part II: q(water) = - q(metal) q(metal) =
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