Fireworks and What Makes Them Go Sparks! Colors! Things that go BOOM! Chemistry doesn’t get much better than this. Ever notice how minutes drag on for hours when you’re waiting for a fireworks show to begin? Everyone’s thinking the same thing: The sky is dark enough the hot dogs are all eaten…come on when are they going to start? Then the first rockets streak into the sky…Ooh! Aah! Yes‚ it was worth the wait. The birthplace of fireworks is generally recognized as China.
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LABORATORY ONE: INTRODUCTION TO MICROSCOPY Ang‚ Elaine Ceperiano‚ Arjohn Dizon‚ Juan Paulo Galbraith‚ Natasha Allen Lim‚ Fenina Joyce Ng‚ Mary Cathlyn Ongsiyping‚ Janelle Santos‚ Emmanuel Ty‚ Michelle Jenine Ateneo de Manila University Loyola Heights Campus Katipunan Avenue‚ Loyola Heights‚ Quezon City 1108‚ Philippines Key words. Calibration‚ compound light microscope‚ magnification‚ monocot root. Abstract This lab activity aims to provide us a comprehensive familiarity with the
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by : Directorate of Education‚ Delhi SOME IMPORTANT REASONING BASED QUESTIONS OF ORGANIC CHEMISTRY 1. Chlorobenzene is less reactive than chloromethane. Ans. In chlorobenzene‚ each carbon atom of benzenering is sp2 hyridised and is electron withdrawing. Chlorine atom donates a lone pair of electron and acquire positive charge. The negative charge is delocalised on ortho and para position by resonance. C-Cl bond acquires partial double bond character and is 169 pm as compared to 17.0 pm in chloromethane
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Pa. What is this pressure in atmospheres? 58 kPa = 0.5724atmospheric 9) the vapor pressure of water 0C is 4.579 mm Hg. What is this pressure in pascals? Pressure = 4.579 mmHg x 101325 Pascals/760mmHg Pressure = 463967.175 Pa 10) the laboratory Hg-vacuum system may operate at 1.0x 10 -5 mm Hg. What is this pressure in pascals? -100‚000 Pa 11) how does the kinetic-molecular theory explain why atmospheric pressure is greater altitudes altitude than at higher altitudes? Atmospheric
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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 reports by providing this
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X-ray Spectrometer (APXS) which measured the abundance of chemical elements in rocks and soils on Mars. 4. it has a melting point of 1340°C Curium was identified by Glenn Seaborg‚ Ralph James and Albert Ghiorso in 1944 at the wartime metallurgical laboratory at the University of Chicago. Its production was the result of helium-ion bombardment of Plutonium-239 in the Berkeley‚ Calif.‚ 60-inch cyclotron. Although curium follows americium in the periodic system‚ it was actually the third synthetically
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EC6512 COMMUNICATION SYSTEMS LABORATORY OBJECTIVES: The student should be made to: To visualize the effects of sampling and TDM To Implement AM & FM modulation and demodulation To implement PCM & DM To implement FSK‚ PSK and DPSK schemes To implement Equalization algorithms To implement Error control coding schemes LIST OF EXPERIMENTS: 1. Signal Sampling and reconstruction 2. Time Division Multiplexing 3. AM Modulator and Demodulator 4. FM Modulator and Demodulator 5. Pulse
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Peoples Health and Safety Outcome One 1.1 - Describe how current health and safety legislation‚ policies and procedures are implemented in the setting:- Health and Safety legislation‚ policies and procedures are implemented in the setting I work in‚ in various ways. They apply to employers‚ head teachers and all other members of school staff‚ as well as parents and outside agencies such as Social Workers‚ who come into contact with the school. The Health and Safety At Work Act of 1974 covers
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CYP3.4 - Health and Safety CYP3.4- 1.1 Tell me what you will need to take into account when planning the environment both indoors and outdoors. your answer should include the following: * The individual needs‚ age and abilities of the children and young people * Specific risks to individuals such as pregnancy‚ sensory impairments * The duty of care When planning an environment for children‚ there are certain requirements that must‚ by law be taken into account and ensured to be met by the
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Chemistry Revision F331 Isotopes - atoms with the same atomic number‚ but different mass numbers 131I - radioactive tracer for thyroid. 99Tc for tumours. Radioisotopes - gamma emitters & short half life - long enough to detect‚ but not long enough for damage. Beta particles emitters are more useful than alpha particle emitters because they penetrate more and so are more easily detected. Also‚ less damaging. The half life is the time taken for half the isotope to decay Mass left = initial
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