Composition and Molecular Formula Worksheet 1. What’s the empirical formula of a molecule containing 65.5% carbon‚ 5.5% hydrogen‚ and 29.0% oxygen? 2. If the molar mass of the compound in problem 1 is 110 grams/mole‚ what’s the molecular formula? 3. What’s the empirical formula of a molecule containing 18.7% lithium‚ 16.3% carbon‚ and 65.0% oxygen? 4. If the molar mass of the compound in problem 3 is 73.8 grams/mole‚ what’s the molecular formula? Write the molecular formulas of the
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Determination of Cleansing Action of Detergents (Using Capillary rise) Synopsis This project report explains about the surface tension and capillarity of liquid through a simple experiment of finding the capillarity of various detergents. Oil stains and grease on dirty clothes cannot be removed‚ using water alone‚ because water does not wet them. If detergents added ‚ surface tension is decreased‚ the area of contact is increased
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Throughout the novel Annie John‚ by Jamaica Kincaid the main protagonist constantly engages in volatile loyalties. Beginning in Antigua‚ Annie John grows up in this city‚ building a strong and powerful relationship based on trust with her mother during her childhood years. As time passes‚ Annie begins to feel the tensions between her mother and herself‚ noticing that the maternal love she used to receiving was slowly fading away. As Annie starts school‚ she turns to the creation of strong‚ yet interchangeable
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Name Date Lab: Denisty – Solids and Liquids Part 1: Density Background Information: The density of an object is how much “stuff”‚ or molecules‚ a substance is made of. Density is how tightly packed the molecules are. To calculate the density of a substance we need to know the mass (weight) of the substance and the volume (how much space) of the substance. Mass is determined by weighing an object. Volume of regular shaped objects is calculated by measuring
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H Week 8 Week 8 Lab: Molecular Biology Review Test Submission: Molecular Biology Lab Assessment Review Test Submission: Molecular Biology Lab Assessment Us er Cours e Introduction To Biology Tes t Molecular Biology Lab As s es s m ent Started 8/19/14 10:14 AM Subm itted 8/19/14 10:22 AM Status Com pleted Attem pt Score 27 out of 30 points Tim e Elaps ed 7 m inutes out of 2 hours . Ins tructions
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Activity 1.2.3 – Perspective Sketches Answer Key Purpose If you can stand on a straight road and look down the road‚ it appears to you the sides of the road begin to look as if they are narrowing to one point in the center of the road vanishes when the road meets the horizon. If the road is straight enough and long enough‚ the sides of the road not only look like they are converging to a single point‚ but the road seems to appear to vanish as it meets the horizon. A similar effect happens if
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Separation techniques LIQUID CHROMATOGRAPHY ‘THE ART OF SEPARATION’ CHROMATOGRAPHY – AN INTRODUCTION Chromatography is a technique through which a mixture of chemical components are separated‚ identified and determined accurately. This technique while provides a way for analytical separations‚ also useful for preparative techniques by which pure compounds can be obtained. Detector Signal Blue Compound Sample Injection + Mobile Phase Retention Time Red Compound It is i defined d fi d as a
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Who doesn’t love to read a good magazine? In Women’s Day there was an ad about Liquid Plumber‚ and good gracious there’s a sexy man on the cover. It quotes “Only have 10 minutes? I only need 7.” In the ad his name is Rusty‚ and he is well groomed. Rusty has a chiseled body his shirt tucked in; with just a little bit of chest hair sticking out. Those hip hugging blue jeans are a plus as well! His hair looks like it has been played with and he has a seductive smirk on his face. Most women would stop
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FE 106 GENERAL CHEMISTRY EXPERIMENT-1 DENSITY OF LIQUIDS PREPARED BY BURAK COBAN PURPOSE: In this experiment we will learn how can we find the density of liquids and liquids of density how change effect of temperature‚ pressure‚ mass‚ volume and concentration. For this reason we will take NaCI solutions with different concentrations and we will measure their densities‚ so we will find out the effects of concentration on density of solutions. THEORY:
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Weight cutting does not only affect the athlete during the process‚ but can have long term effects on an athlete’s health. Cutting weight is linked to woman having lower estrogen levels which affects long term bone density. One trainer stated that due to constant weight cutting his fighter is unable to avoid injuries because she is prone to broken bones and has constant stress fractures. This has cause the fighter to be withheld from competition for three years in a row with no return in sight. Weight
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