conducted in order to determine the density of the Aluminum metal samples provided in the lab. Specific tools such as the vernier caliper and balance scale were used to measure and record the values found. Given that density is a measurement of mass over volume‚ both of these quantities would have to be determined experimentally‚ prior to proceeding with the calculation of the density‚ for each of the six subjects tested. Being as accurate and precise as possible‚ the data yielded a density that was similar
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volumetric flask to measure the volume. We used two different pieces of glassware to determine the most accurate density of ethanol by mass since the measurement of volume is variable. Procedure: As stated in lab manual pages 23-24. Data and results for part I: Density and identification of a solid: Calculated Density Using the Water Displacement Method Mass of object (g) Initial volume (mL) Final volume (mL) Volume of object (mL) Density (g/mL)
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efficient motor bikes they are the main reason for the growth of motor bike segment in India. The two-wheeler industry in India has been in existence since 1955. It consists of three segments o Scooters o Motorcycles o Mopeds The increase in sales volume of this industry is proof of its high growth. In 1971‚ sales were around 0.1 million units per annum. But by 1998‚ this figure had risen to 3 million units per annum. Similarly‚ capacities of production have also increased from about 0.2 million units
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substances through several ways‚ like diffusion? Aim: To plan and carry out an investigation to show the relationship between volume/Cm3‚ surface area‚ and diffusion using agar cubes measured in time/s; and to demonstrate‚ using diffusion‚ why the size of cells is limited‚ keeping the room temperature and pressure constant. Hypothesis: I expect to find that when the surface area to volume of a cell reaches a certain level‚ diffusion alone won’t be able to supply the cell materials needed‚ and as single-celled
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water was placed into the graduated cylinder. The pennies minted before 1982 were placed in the water and the new volume was recorded and used to calculate the volume of the pennies. The five calculations were averaged. These steps were then repeated with the pennies minted after 1982. The precision of the mass and volume data was calculated. The mass calculations were divided by the volume calculations to find the densities for both sets of pennies. Data and Observations Trial Mass of pennies
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Intro: Surface Area and Volume Multiple Choice Identify the choice that best completes the statement or answers the question. Find the surface area of the space figure represented by the net. ____ 1. 12 in. 4 in. 6 in. 4 in. 4 in. 6 in. a. 288 in.2 ____ 2. b. 144 in.2 c. 240 in.2 d. 288 in.2 5 cm 5 cm 7 cm 8 cm 4 cm ____ a. 124 cm2 b. 110 cm2 c. 150 cm2 d. 164 cm2 3. Find the surface area of the cylinder. Use a calculator. Round to the nearest tenth. 4m 3m a
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Laboratory Experiment No. 1: Common Laboratory Procedures Objective In this experiment‚ the objectives were to use a balance and measure the volume of the liquids. Theory In the experiment‚ three calculations were used. These are the density‚ relative error and the standard deviation. Density is refers to the mass (m) per unit volume (V) of a material and is often represented by the symbols d or ρ‚ where d = m/V. The density of an object changes with pressure and temperature. Second‚
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1. If a line y = x + 1 is a tangent to the curve y2= 4x ‚find the point the of contact ? 2. Find the point on the curve y = 2x2– 6x – 4 at which the tangent is parallel to the x – axis 3. Find the slope of tangent for y = tan x + sec x at x = π/4 4. Show that the function f(x) == x3– 6x2 +12x -99 is increasing for all x. 5. Find the maximum and minimum values‚ if any of 6. For the curve y = 3x² + 4x‚ find the slope of the tangent to the curve at the point x = -2. 7. Find
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window. Record the mass (m)‚ volume (V)‚ and density (ρ) of the wood block. 5. In the middle of the screen there is a container of water. Record the volume of the water. 6. Drop the wood block into the water. Does the wood block float? Explain why or why not. 7. Place the block so that it is completely submerged in the water. Now what is the volume of the water? By how much did it change? 8. Write a statement about the volume of an object and the volume of liquid displaced. 9
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ESTIMATION OF IRON IN IRON ORE-SPECTROPHOTOMETRIC METHOD By: Taylor Villari Experiment conducted on 7/22/13 Components of each test tube examined in the spectrophotometer Trial | Volume of Iron solution (mL) | Micrograms of Iron | Volume of 10% sodium acetate | Volume of 0.1% o-phenanthroline | Volume of water (mL) | 1(blank) | 0.0 | 0.0 | 1.0 mL | 1.0 mL | 8.0 mL | 2 | 1.0 mL | 10 | 1.0 mL | 1.0 mL | 7.0 mL | 3 | 3.0 mL | 30 | 1.0 mL | 1.0 mL | 5.0 mL | 4 | 5.0 mL | 50 | 1.0 mL
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