9 13 A to C 4 4 9 13.5 A to D 3.5 5.5 12 17.5 B to C 4 4 8.5 13 B to D 2 2.5 5 7.5 C to D 3 3.5 5.5 10.5 Analysis: Answer the following questions in complete sentences. Include the answers in theAnalysis and Conclusion section of your lab report. 1. How does the density and distribution of your “stars” change as the balloon expands? When the balloon is not inflated‚ the “stars” are closer together. Thus‚ they are denser. When the balloon is blown up‚ the universe is bigger‚ making the
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The purpose of the lab was to see how exercise affects homeostasis by measuring a person’s heartbeat‚ breathing rate‚ and sweat while they were exercising. The hypothesis I made was‚ if the volunteer starts to exercise‚ then the body will react by quickening the heart and breath rate as well as sweating to keep homeostasis in the body‚ therefore exercise does affect homeostasis. During the experiment there was some major observations that made the answer to the question clear. As the volunteer exercised
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How Much Sodium Bicarbonate Is In the Mixture? Lab Investigation 14 Chemistry 113 Lab 10/13/2011 1) Method 1: Adding acid NaHCO3 + HCl → NaCl + CO2 + H2O a) Unknown mixture of NaCl and NaHCO3 Mass of unknown mixture (NaCl + NaHCO3) | 3 g | Mass of HCl | 30 .31g | Mass of products ( NaCl + H2O ) | 26.98 g | Calculate mass of CO2 | 6.33g | Calculate mass of NaHCO3 | 12 .1 g | i) Calculation : Mass of CO2 = [Mass of unknown mixture (NaCl + NaHCO3) + Mass of HCl ] – [Mass of NaCl
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Lab # 4 Determination of Density of Liquids Name: Lab Partner: Period: 3 Date Completed: 9/23/2014 Date Submitted: 9/29/2014 Data TABLE 4 DENSITY OF SALT SOLUTIONS-INDIVIDUAL GROUP’S RESULTS Concentration (%) Mass (g) Volume (mL) Density (g/mL) 0 9.9522 10.00 0.9952 4 10.1291 10.00 1.013 8 10.5233 10.00 1.052 12 10.7487 10.00 1.075 16 11.0297 10.00 1.103 Unknown # 10.6234 10.00 1.062 Calculations 1. Show all density
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Homer Gere Science - Perry 7-3 Kober Balloon Lab Report Problem: The goal of the balloon lab was to get a balloon attached to a line all the way across the room. One limitation was that we could only use one balloon‚ two straws‚ and tape. The circumference of the circle at its largest point couldn’t be larger than 100 cm. Procedure/Results: Trial Number | Distance Traveled (CM) | Time (sec) | Velocity (CM/sec) | 1 | 346 | 1.02 | 339.2 | 2 | 471 | .79 | 596.2 | 3 | 356 | .8 |
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References: Moran‚ Shapiro‚ Munson‚ DeWitt. (2003). Introduction to Thermal Systems Engineering: Thermodynamics‚ Fluid Mechanics‚ and Heat Transfer. John Wiley & Sons. Manufacturing Engineering Lab II: Laboratory Manual. Department of Manufacturing and Materials Engineering. (2013). Various internet resources. Retrieved December 10th 2013.
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Roy Levin Bio 11 Lab Dr.Izquierdo Analysis of Macromolecules in Tissue Homogenates of Bos taurusMaterials and Methods The homogenates provided were made by homogenizing tissues in a sucrose phosphate buffer in a 1:20 ratio. The protein concentration in bovine cells was measured by diluting the homogenate with a 1:5 ratio; 50 microliters of homogenate and 200 microliters of water. Then 5 known protein concentration samples which were 0.4‚ 0.8‚ 1.2‚ 1.6‚ 2.0 mg/ml of bovine serum were used to
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Chemistry 12 Acetylene Lab March 8th‚ 2013 Hypothesis If the amount of gas is increase‚ it would have a fully combustion because it contains more carbon ions after the combination. Observation % of gas in the test tube ( approximately) % of O2 in the test tube (approximately) Black soot What kind of sound is produced? Trail# 1 70.00% 30.00% Yes (Whole test tube) “Puff” Trail# 2 50.00% 50.00% Yes “Puff” Trail# 3 10.00% 90.00% Few( head of the
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Lab Report 1 Introduction: Proper chemical formulas entitle many challenges such as the Law of Multiple proportions that states that there may be more than one plausible mole ratio for the elements in that compound. However if we determine the mass of each element in the compound we will be able to get the true chemical formula. In this experiment‚ we used the law of definite proportions to find the chemical formula for a hydrated compound containing copper‚ chlorine‚ and water molecules
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Lab 1: Heart Rate Lab (Revised Fall 2010) Lab 1. Heart Rate‚ Physical Fitness‚ and the Scientific Method Prelab Assignment Before coming to lab read carefully the following pages on the scientific method and then answer the prelab questions at the end of this lab handout. Be prepared to discuss and/or hand in your responses to the prelab questions at the start of lab. Introduction Biology is a dynamic field of study whose aim is to unravel the mysteries of life itself. Throughout history‚ humans
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