Haileab Ghebrekiden‚ Lucille Emeruem‚ Shakira Thomas‚ Chris Thomas and Brad Steward 9/18/2014 Physics I Lab Dr. Abdalla Measurement of Length‚ Mass Volume and Density Introduction: All science is concerned with measurement. "MEASUREMENT" is the determination of the size or magnitude of something "Or" The comparison of unknown quantity with some standard quantity of the same rates is known as measurement. Due to this fact we have standards of measurement. Since the precision of all measuring
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Surface area / Volume ratio Experiment Introduction: The surface area to volume ratio in living organisms is very important. Nutrients and oxygen need to diffuse through the cell membrane and into the cells. Most cells are no longer than 1mm in diameter because small cells enable nutrients and oxygen to diffuse into the cell quickly and allow waste to diffuse out of the cell quickly. If the cells were any bigger than this then it would take too long for the nutrients and oxygen to diffuse into
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was a comparison between accuracy and precision of densities measured by volume. Mass measurements are often used units in the metric system. Volume can be examined a borrowed unit. The volume measurements were made in mL. Every measurement had a level of hesitancy affiliated with it. The experiment could feel uncertain from the object used for measurement and from the accuracy of the person doing the measuring of the volume. Because of this uncertainty‚ the experiment must be repeated for better
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Applications of Differentiation 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 a‚ for which f(x) = a(x+sinx)+a is increasing 6. Find the intervals in which the function f ( x ) = x3 - 6x2 + 9x + 15 is
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LESSON 3: MOLAR VOLUME QUESTIONS 1. Calculate the density of the least dense gas‚ hydrogen‚ at 25⁰C and 101.3kPa. [0.083g/L] 2. Calculate the density of the densest gas‚ uranium (VI) fluoride (UF6) at 70⁰C and 25.0kPa. [3.09 g/L] 3. An unknown monoatomic gas X has a density of 5.37g/L at 25⁰C and 101.3kPa. Calculate the molar mass of the gas and determine its identity. [ 131.028g/mol; Xe] 4. Calculate the density of ammonia gas in grams per litre at 18⁰C and 100.4kPa. [0.706g/L] SCH3U0 Gases
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Study Guide Chart Solids Liquids Mass Definition Unit Unit Methods the amount of matter in a given space g g Measuring Mass Directly Finding Mass by Difference Measuring out a Substance Volume the amount of space an object takes up cm3 mL Measuring Volume Directly Calculating Volume by Formula Water Displacement Method for Small‚ Irregularly Shaped Objects Water Displacement Method for Large‚ Irregularly Shaped Objects Density Mass the amount of matter in a given space g/cm3 g/m
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• To become cognizant of mass and volume measurements and their manipulations through calculation. • Distinguish wholesome substances and mixtures utilizing density determinations. • To hone and practice great lab strategies. This lab report discusses an experiment to become cognizant of mass and volume measurements and their manipulations through calculation. Also‚ to distinguish wholesome substances and mixtures utilizing density determinations. The objective of this lab is to hone and practice
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SOLIDS: Mass‚ Volume and Density Measurements A. Overview Review Sections 1.4 - 1.6 in your textbook (Chemistry: The Central Science‚ 9th Ed. ‚ Brown‚ LeMay‚ Bursten‚ & Burdge) This experiment will introduce you to a very important concept in science‚ especially chemistry: DENSITY. Density is the relationship between the mass of an object and the volume which it occupies. Solid substances generally have the greatest density‚ normally in the range of 1 - 25 g/cm3. Most liquids have densities between
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[Type text] [Type text] [Type text] _An experiment on the effect of surface area to volume ratio on the rate of osmosis of Solanum tuberosum L._ BACKGROUND A cell needs to perform diffusion in order to survive. Substances‚ including water‚ ions‚ and molecules that are required for cellular activities‚ can enter and leave cells by a passive process such as diffusion. Diffusion is random movement of molecules in a net direction from a region of higher concentration to a region of lower concentration
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