CHE 140 Name__Chesi Spriggs First Hour Exam Potentially useful information 1000 g = 1 kg 1000 mL = 1 L 1 in = 2.54 cm 1 mL = 1 cm3 D = m/v Select the best choice for the following questions. ___e___ 1. A hypothesis is a(n) a. formulation of principles based on facts. b. modification of a theory. c. organized body of knowledge. d. tentative explanation of observations. e. None of the above. __b___ 2. The initial success of the Bohr theory was based
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Module Five Wellness Plan Fill in all logs and answer the reflection questions completely with supporting details. Section 1: Goals Include your goals for each area of wellness before completing the reflection question. 1. Physical-I want to go to the gym Monday through Friday 2. Social-I will start the process to also create a academic decathlon team 3. Emotional-I will set a goal to complete by the end of the summer 4. Academic-I will score a 5 when I take my AP human geography AP test this
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Keghan Chapter 8 MULTIPLE CHOICE QUESTIONS Topic: Structure Elucidation 1. An alkene adds hydrogen in the presence of a catalyst to give 3‚4-dimethylhexane. Ozonolysis of the alkene followed by treatment with zinc and acetic acid gives a single organic product. The structure of the alkene is: CH3 A) CH3CH=C-CHCH2CH3 (cis or trans) CH3 CH3 B) CH3CH2C=CCH3 (cis or trans) CH2CH3 C) CH3 CH2=CCH2CHCH2CH3 CH3 CH2 D) CH3CH2CCHCH2CH3 CH3 CH3 E) CH3CH2CHCHCH=CH2
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Chapter 7: Bonds and Their Valuation 1. If a firm raises capital by selling new bonds‚ it could be called the “issuing firm‚” and the coupon rate is generally set equal to the required rate on bonds of equal risk. a. True b. False ANSWER: True 2. A call provision gives bondholders the right to demand‚ or “call for‚” repayment of a bond. Typically‚ companies call bonds if interest rates rise and do not call them if interest rates decline. a. True b. False ANSWER: False 3. Sinking funds are
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relative amount in which each isotope of an element Calculating: given 2 isotopes of an element [B: 10.01u] [B: 11.01u] 1) Given average atomic mass: 10.81u If given percentages‚ you can find average atomic mass by adding each portion 2) Set variables for unknown values Let x represent % abundance for 10/5 B Let 1-x represent % abundance for 11/5 B Calculate: 10.01x+(1-x)11.01=10.81 10.01x+11.01-11.01x=10.81 -1.00x=0.2 X=0.2 The Mole and Avogadro’s constant Mole: the SI unit that is used
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of the Upper Nepean Catchment. The following is a summary of factors that affect water quality. Water may contain several ions‚ namely anions and cations which are toxic to humans. Hardness is the scum on water surface from significant concentrations of calcium and magnesium ions. Total dissolved solids is the measure of dissolved solids that are ionic in water. Turbidity is the presence of suspended solids in water which reduces penetration of light‚ resulting in a decrease concentration of
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50.0 g of C10H10N4SO2‚ what mass of AgC10H9N4SO2 can be produced assuming 100% yield? Answer: 71.4 g AgC10H9N4SO2 Summary on LR 1. Calculate the amount of product that would be formed if the first reactant were completely consumed. 2. Do #1 for the other reactant/s (separate calculation). 3. Choose the smaller of the two amounts of product from #s 1 and 2. This is the theoretical yield and the reactant that produces the smaller amount is the limiting reactant. The other reactant/s
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1. (a) The diagram below represents the industrial fractional distillation of crude oil. (i) Identify fraction A. (ii) What property of the fractions allows them to be separated in the column? (2) (b) A gas oil fraction from the distillation of crude oil contains hydrocarbons in the C15 to C19 range. These hydrocarbons can be cracked by strong heating. (i) Write the molecular formula for the alkane with 19 carbon atoms. (ii) Name the type of reaction involved in cracking. (iii) Write
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experimental Data Funnel #1 Funnel#2 Average Mass of glass funnel‚ initial (grams) 35.2653 34.5269 34.8961 Mass of glass funnel + ppt. after drying (grams) 35.6653 34.9569 35.3111 Mass of product (grams) 0.4000 0.4300 0.4150 Moles of product corresponding to moles CaC2O4.H2O 2.74 x 10-3 2.94 x 10-3 2.84x10-3 % Ca2+ in the unknown sample 0.4384 = 0.44 0.4704 = 0.47 0.45 Calculations : moles of product = moles CaC2O4.H2O (mw = 146 g/mol) Funnel 1: Funnel 2: % Ca2+ in
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Unit 2 lab 1: common linux commands 1. try giving the following commands and observe the behavior with each combination of options and arguments. A. list the names of the files in the working directory Is. Desktop Documents Downloads Music Pictures Public Templates Videos B. by default‚ Is does not list files that have hidden filenames 9filenames that begin with a period; Sobell‚ page 190). List the names of all files in the working directory‚ including those with hidden file names. Is
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