was to determine the density of water and‚ of unknown solutions‚ by being as accurate as possible‚ by pipetting and weighing the solutions. Density if defined as “The mass per unit volume of substance; common unitg cm-3” (Lewis. R and Evans. W.‚ 2011). As the density is an intensive property of all matter it depends on temperature and pressure. “The density of a mixture may also depend on its composition” (Nedelsky. L.‚ 1983). Density of a matter can be calculated by: Density= Mass (g)Valume(cm3)=g
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NAME LAB TIME/DATE _ Endocrine System Physiology: Computer Simulation Metabolism The following questions refer to Activity 1: Determining Baseline Metabolic Rates. 1. Which rat had the fastest baseline metabolic rate? -------------------------The normal rat 2. Compare the baseline metabolic rates for the thyroidectomized rat and the normal rat and explain your results. The thyroidectomized rat had a lower baseline metabolic rate beause the removal of its thyroid gland prevented it
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1. It is estimated that uranium is relatively common in the earth’s crust‚ occurring in amounts of 4 g/metric ton. A metric ton is 1000 kg. At this concentration‚ what mass of uranium is present in 1.0 mg of the earth’s crust? a) 4 nanograms b) 4 micrograms c) 4 milligrams d) 4 × 10–5 g e) 4 centigrams Ans: a) 4 nanograms Page: 1.3‚6 2. In 1928‚ 1.0 g of a new element was isolated from 660 kg of the ore molybdenite
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Citation: Karjalainen‚ J.‚ Karjalainen‚ R.‚ & Huhtala‚ K. (2012). MEASURING AND MODELLING HYDRAULIC FLUID DYNAMICS AT HIGH PRESSURE - ACCURATE AND SIMPLE APPROACH. International Journal Of Fluid Power‚ 13(2)‚ 51-59. ASTRACT: Dynamic properties of hydraulic fluids have to be taken into account in ever increasing fluid power applications. The main reasons are increasing accuracy demands in control and modeling‚ as well as increasing operating pressure and temperature ranges. Moreover‚ the already
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Physical and Chemical Properties Peter Jeschofnig‚ Ph.D. Version 42-0188-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that
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Measurement: Length‚ Mass‚ Volume‚ Density‚ and Time Peter Jeschofnig‚ Ph.D. Version 42-0267-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab
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laboratory apparatus in measuring mass‚ length‚ volume‚ temperature‚ and density 2. To compute the accuracy and the precision of a set of scientific measurements 3. To apply the concept of significant figures in reporting correctly scientific measurements Materials and Equipment Ruler‚ meter stick‚ 10 mL graduated cylinder‚ 50 mL graduated cylinder‚ small and large test tube‚ 50 mL and 150 mL beakers‚ 50 mL Erlenmeyer flask‚ digital top-loading balance‚ unknown liquids for density determination‚ irregular
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then the egg will float because the egg has a density that is lower that the density of the fluid it displaces. Background Information If the object has a density that is higher than the density of the fluid it displaces‚ it will sink. If the object has a density that is lower than the density of the fluid it displaces‚ it will float. Some objects that sink in fresh water will float in salt water. This is because saltwater has a higher density than freshwater. Websites that I used for this
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In this lab‚ there 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
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diameter of sphere using different kinds of measuring devices (foot rule‚ vernier caliper‚ and micrometer caliper) in order to achieve accuracy in the scientific measurements. After experimenting‚ it was revealed that the micrometer caliper has the lowest percentage of error. 1. Introduction In the early days‚ people used mostly human body parts for measuring. And because the measurement depended on the body size and length of the person measuring‚ it often leads to varying measurements which
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