The current Tajik Republic harkens to the Samanid Empire (AD 875–999). The Tajik people came under Russian rule in the 1860. Tajikistan became an autonomous Soviet socialist republic within Uzbekistan in 1924; Basmachi resistance in the wake of the Russian Revolution of 1917 was quelled in 1925‚ and Tajikistan became one of the component Soviet socialist republics in 1929 called Tadzhik SSR from 1936 to 1991. Tajikistan gained independence in 1991‚ and has experienced three changes in government
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FACULTY OF RESOURCE SCIENCE AND TECHNOLOGY DEPARTMENT OF CHEMISTRY STK 1094 – Analytical Chemistry 1 EXPERIMENT NO : 1 TITLE OF EXPERIMENT : ACID – BASE TITRATIONS DATE OF EXPERIMENT : 27 SEPTEMBER 2013 GROUP MEMBERS & MATRIX NUMBERS : 1. DELVINO DISONNEO ANAK DALIN (44903) 2. GOH CHIA HONG (44927) 3.LINDA CHONG (41889) 4.LIM WHYE KIT LEONARD(41874) 5. LAB FACILITATOR : REPORT DUE DATE : 4 OCTOBER 2013 INTRODUCTION The laboratory
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Sample Midterm Examination The midterm examination is two (2) hours long. In the actual examination you would not be allowed to consult your books or notes; however‚ you would be able to use a calculator. We strongly recommend that you sit this examination as if you were writing it in an invigilated setting. You will get a much better idea of your degree of preparedness for the actual examination. Part A: Short–answer Questions (1 mark each) 1. Calculate the density of bromine‚ given that 120.0
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Temperature and Equilibrium Virtual Lab Change is influenced by many different factors in many different situations. If you imagine the 400‚000 gallons of water in a stream at the top of a hill‚ you can picture that they will flow down the hill in order to reach equilibrium. But what if the temperature outside is -40 degrees Fahrenheit? How might this change the movement of the water molecules down the hill? This virtual lab will allow you to explore how temperature changes affect two linked
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My Career path with input from True colors survey JAMES ISAACS AMU HRMT100 Professor Mueller January 15‚ 2012 My Career path‚ with inputs from True color survey‚ shows my primary color is Orange. Here I sat as an older retiree and this is how I decided to enhance my career path. My essay is about my personality traits and learning abilities. With the Carolyn’s Kalil’s survey‚ this survey portrayed how my work ethic and abilities will affect any management practice I will use (Carolyn’s Kalil’s
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The symbol for sulfur is S‚ and it has an atomic number of 16. The average atomic mass of sulfur is 32.07 amu. Sulfur can be categorized as a non-metal‚ and it belongs to the chalcogen family (J). Attributes of Sulfur Under normal atmospheric conditions‚ sulfur is in the solid state (RSC). It is light yellow in color and odorless in its pure form (J). Sulfur’s
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Chemistry (Chapter 4-9‚ 12) *Ionic compounds have relatively high melting temperatures. *Know about polar bonds‚ nonpolar bonds‚ avogadro’s number‚ and calculating the atomic mass (unit?) * Chapter 4: Basically about theories of atoms and the atom itself 4-1: Theories The Greeks believed that all matter was composed of earth‚ fire‚ air and water. Democritus: the first person to propose the idea of atoms (that matter was not infinitely divisible): atomos. “Atoms are solid‚ homogenous
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that this data is in accordance with the law of multiple proportions. 6. Calculate the mass of 1 molecule of nitrogen 7. Calculate the mass of 1 molecule of water and 100 molecules of C12H 22O11 8. Calculate the mass of an atom of silver (Ag = 108 amu) 9. Calculate the number of atoms in (a) 52 moles of He (b) 52 a.m.u of He (c) 52 g of He 10. Calculate the volume occupied by the following at STP a. 14 g of nitrogen gas b. 1.5 gram mole of CO2Che/XI Chapter 1 11. Calculate the number of
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form of nickel has a positive 2+ charge overall. The electron configuration is [Ar] 3d8 4s2.(Which breaks down to 2 electrons in the first level‚ 8 in the second‚ 16 in the third‚ and 2 valence electrons.) The element has an atomic mass of 58.693 amu(atomic mass unit)‚ which is actually smaller than the element before it-Cobalt. The element has physical characteristics of a hard‚ silvery-white metal‚ that is malleable and ductile. Another property of Nickel and its compounds is that they are extremely
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periodic table‚ the atomic mass in the top left corner of every box is a decimal. The mass is in decimal format because the number listed is an average of that atom‚ plus all of its isotopes. Isotopes have different masses because neutrons weigh 1 amu where as an electrons weight would be negligible. The experiment described below shows how including all isotopes of one element effect the average atomic mass of the element. Materials: 1. Calculator 2. Whitium sample 3. Brownium sample
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