ingredients. While more research is needed on the health effects of hairspray‚ certain ingredients have been linked to adverse health effects in some instances. Ingredients Hairspray contains a group of active ingredients (polymers and solvents) in addition to one or more propellants. It usually comes in a container with a pump or aerosol nozzle. Polymers are
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moles of a) N atoms in a sample of C7 H 5 (NO 2 )3 that has the same number of O atoms as 12.4 g C6 H12O6 b) Br2 in a sample consisting of 2.17 ×1024 Br atoms c) N atoms in 43.5 g of Mg(NO3 ) 2 d) Br2 in a sample consisting of 2.65 L liquid bromine (d = 3.10 g/mL) 3) Explain which of the following statement(s) is (are) correct for sorbic acid‚ C6H8O2. a) it has a C:H:O mass ratio of 3:4:1. b) it has the same mass % composition as acrolein‚ C3H4O. c) it has the same empirical formula as
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One of a group of human-made organic compounds derived from simple hydrocarbons in which hydrogen atoms are replaced by chlorine‚ bromine‚ fluorine. * Clean Air Act of 1970- revision of prior congressional legislation to control air pollution that set stricter standards for air quality‚ imposed limits on emissions from new stationary and mobile sources‚ provided new funds for pollution-control
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fluoride LiF Lithium oxide Li2O When naming binary compounds follow these rules: 1. the element with the positive ionic charge is written first. 2. The second word is formed by changing the ending of the name of the element to “ide.” For example‚ bromine changes to bromide. Metals usually have positive charges while nonmetals (when combined with nonmetals) have negative charges. Practice Problems Using the rules given above‚ name the compounds listed in the next column. 1. MgO ____________________
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Q3. What is Environment? Why is it essential for management students & practitioners to study environment & its management? Answer:- Environmental Protection Act (1986) defined “Environment as the sum total of water‚ air and land‚ their interrelationship among themselves and with the human beings‚ other living beings and property.” The important things in the environment that we value are called ‘Natural Resources’. There are 2 types. 1. Renewable Natural Resources: - They grow naturally when we
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0.00031 | Yes (e.g. Zinc finger proteins) | 12 | 14 | Silicon | 0.002 | 0.0010 | 0.0058 | Yes (probable) | 14 | 37 | Rubidium | 0.00046 | 0.00068 | 0.000033 | No (?) | 1 | 38 | Strontium | 0.00046 | 0.00032 | 0.000033 | No (?) | 2 | 35 | Bromine | 0.00029 | 0.00026 | 0.000030 | No (?) | 17 | 82 | Lead | 0.00017 | 0.00012 | 0.0000045 | No (?) (toxic in higher amounts) | 14 | 29 | Copper | 0.0001 | 0.000072 | 0.0000104 | Yes (e.g. copper proteins) | 11 | 13 | Aluminium | 0.000087 | 0
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(chemical reaction where many small identical molecules join together to form one large molecule). Identify data‚ plan and perform a first-hand investigation to compare the reactivities of appropriate alkenes with the corresponding alkanes in bromine water and iodine in solution Alkanes burn in air to form CO2 and H2O‚ and liberate large amounts of heat in the process. Alkanes also react with (or decolourise) Cl‚ Br‚ and I‚ very slowly‚ in the presence of ultra-violet light. However without UV-light
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Chemistry A Bonding Worksheet #1: Introduction to Ionic Bonds The forces that hold matter together are called chemical bonds. There are four major types of bonds. We need to learn in detail about these bonds and how they influence the properties of matter. The four major types of bonds are: I. Ionic Bonds III. Metallic Bonds II. Covalent Bonds IV. Intermolecular (van der Waals) forces Ionic Bonds The ionic bond is formed by the attraction between oppositely charged ions.
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Abstract Tamoxifen‚ most commonly sold under the brand name Nolvadex‚ is the most widely used drug in the treatment of breast cancer during both early and late stages. It belongs to a class of drugs known as SERMs (Selective Estrogen Receptor Modulators). SERMs work by blocking the estrogen receptors in breast cells to prevent any binding with estrogen. It is consumed orally as a tablet or as a liquid (Anon.‚ 2017). The following paper discusses the discovery of Tamoxifen‚ its laboratory synthesis
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only those existing in or derived from plants or animals‚ but that now include all other compounds of carbon. This is the first thing that we need to understand. The fact that organic compounds contain carbon and are also combined with nitrogen‚ bromine‚ hydrogen. Sulfur‚ and chlorine and that the majority of the compounds found and tested in crime scene labs are going to be organic. The organic trace evidence that is found at crime scenes is going to be fluids. Fluids that can be left at a crime
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