To identify chemical and physical change in matter. PROCEDURE: Finding out the physical and chemical change in matter. There was seven different substances that were being tested; Mossy Zinc (Zn)‚ Magnesium (Mn)‚ Copper (Cu)‚ Magnesium Oxide (MgO)‚ Copper II Nitrate (Cu(NO3)2)‚ Copper II Carbonate (CuCO3) and Sodium Chloride (NaCl). There were four test tubes set up for the experiment. Each substance was divided amongst the four test tubes. The first test tube was being observed at its natural
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Finding the percentage of copper in brass alloy. Introduction This is an investigation to find out how much copper is in a brass alloy. The brass alloy we are experimenting on is called Muntz Metal. Muntz metal is 60% copper‚ 40% zinc and a hint of copper [http://en.wikipedia.org/wiki/Muntz_metal] (accessed 4/10/12). Muntz metal was developed as an alternative to expensive‚ heavy copper. It is comprised of about 60% copper and about 40% zinc‚ with a small amount of iron. The finished product actually
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which lead to the Virginia Company to give orders for "a perpetual war without peace or truce." Although the Powhatan made one more attempt at destroying the Virginians‚ they were defeated again in the Second Anglo-Powhatan war. The peace treaty of 1646 eliminated all chance of the Powhatan coexisting with the Virginia settlers. The treaty also banished the Indians from their native lands‚ which lay the president for what was later known as a reservation. After this the number of Native Americans
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Abstract The experiment was conducted‚ which metals manganese (Mn3+)‚ Cobalt (Co3+) and Copper Cu3+ was prepared and acac complexes where also obtained. Recrystallization was performed of which Mn(acac)3 ‚Co(acac)3 and Cu(acac)3 was obtained at percentage yield of 32%‚ 85.6% & 92% for each of acac’s. TLC was performed which results deduced unknown mixture both contained manganese and cobalt since it had the same Rf vaues. Experiment aims The aim of the experiment was to prepare metal
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Spanish crown‚ followed by editions in French (1578)‚ English (1583)‚ and German (1599) – all countries where religious wars were raging. The first edition published in Spain after Las Casas’s death appeared in Barcelona during the Catalan Revolt of 1646. The book was banned by the Aragonese inquisition in 1659.[77 This passage visualy describes the situation during Spanish conquest of Latin America. It‘s brevity does not diminish it‘ s content. Bartolome de Las Casas tells what he saw through his
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ARTICLE Received 26 Jul 2013 | Accepted 13 Nov 2013 | Published 20 Dec 2013 DOI: 10.1038/ncomms3920 Development of an ultra-thin film comprised of a graphene membrane and carbon nanotube vein support Xiaoyang Lin1‚2‚ Peng Liu1‚2‚ Yang Wei1‚2‚ Qunqing Li1‚2‚ Jiaping Wang1‚2‚ Yang Wu1‚2‚ Chen Feng1‚2‚ Lina Zhang1‚2‚ Shoushan Fan1‚2 & Kaili Jiang1‚2 Graphene‚ exhibiting superior mechanical‚ thermal‚ optical and electronic properties‚ has attracted great interest. Considering it being one-atom-thick
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responses to TWO questions. ANSWERS MUST BE WRITTEN IN AN EXAMINATION BOOK ANSWERS MUST BE WRITTEN IN INK. EXCEPT WHERE THEY ARE EXPRESSLY REQUIRED‚ PENCILS MAY BE USED ONLY FOR DRAWING‚ SKETCHING OR GRAPHICAL WORK Th ink sw ap Do cu me Part A requires candidate to answer four (4) questions. NO MORE THAN ONE AND A HALF PAGES ON EACH nt Page 1 of3 PART A Write no more than one and half pages on EACH of FOUR of the following questions. 1. What are the environmental
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← Muon ← Is created when a neutrino collides and combines with an H2O proton (weak force) ← Creates blue light ← High energy; travels faster than the speed of light (in water) ← Neutrino ← Type of particle: Lepton (like electrons and muons) ← Most abundant particle in the universe ▪ 1016 neutrinos are passing through your body at any point in time ← Theoretically discovered by Wolfgang Pauli (1930); actually discovered in 1955 ← Produced during nuclear reaction or changes
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the third smallest CU in the metro area‚ operates two locations in Albuquerque and one location in Farmington‚ NM. The credit union has total assets of $53‚598‚091.00 as of 11/2013. The following analysis of A NMFCUis prepared to highlight the competitive market in which the credit union operates. Strengths A NMFCU has firmly entrenched itself in the New Mexico Financial services market enjoying local leadership and a 79 year history in NM. Within the structure of the CU exists ethnic and gender
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Chemical Reactions What is a Chemical Reaction? Types of Chemical Reactions Redox Reactions Nonredox Reactions Classifying Reactions What is a Chemical Reaction? A chemical reaction is a process in which the identity of at least one substance changes. A chemical equation represents the total chemical change that occurs in a chemical reaction using symbols and chemical formulas for the substances involved. Reactants are the substances that are changed and products are the substances that are
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