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Computer Engineering Questions and Answers October 16, 2019

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if it helps qH2O = -1317.96 i need the answer to this please The calorimeter contains 50.00g of water a 97.50C. The final temperature of the calorimeter is 91.20C. The heat capacity of the calorimeter is 6.8J/C and the specific heat capacity of water is 4.184J/gC. What is the heat change for the calorimeter? qcal=J Enter either a + or - sign AND
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Acrolein, C 3 H 4 O ( M: 5 6 . 0 6 3 g mol - 1 ) is a component of cigarette smoke. A single cigarette can contain 2 2 0 . \ mu g . If all the acrolein in a cigarette is a liquid at its boiling point, how much energy must it absorb to become a gas at 8 5 7 C ? Specific heat capacity of gaseous acrolein: 1 . 8 0 7 4 J g - 1 K - 1 Boiling Point

The diamond crystal structure has the cube edge of 3 . 5 6 . Calculate the distance between the nearest neighbours and the number of atoms per cm 3

The electron in a hydrogen atom is initially in energy level 7. Calculate the shortest wavelength ( nm ) of light that can be absorbed by this atom
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When looking at the chemical formula B a S O 4 Explain why / how both ionic and covalent bonds are present.
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Calculate the de Broglie wavelength of an electron ( mass of 9 . 1 1 0 - 3 1 k g ) moving a velocity of 4 . 2 9 1 0 4 m s . ( a ) 1 7 n m ( d ) 1 . 7 n m ( b ) 1 . 7 m ( e ) none of the above ( c ) 1 . 7 p m
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Please answer the following : Nothing is ever wasted in Biochemistry. Describe in detail two examples of this. Be sure to explain why this is important.

Which one of the following molecules or ions demonstrates resonance? ( a ) B r O - ( d ) S C N - ( b ) P C l 3 ( e ) C O F 2 ( c ) H C N
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complete the table PART 1: Quantitative Dehydration of Epsom Salts, MgSO4xH2O 4. Mass of crucible and contents after 1" heating 5. Mass of crucible and contents after 2nd heating 6. Mass of crucible and contents after 3rd heating 7. Mass of anhydrous MgSO4. Pick the smallest mass between 4,5 and 6 above and subiract the mass of the empty crucible.
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If the starting molecule has the following stereochemistry, what will be the stereochemistry of the major products? Draw them out.
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Use formation feaction to calculate F for the following reactions: 2NO(s)+O2(s)2NO2(s)H1n k) chextbookand Medis NaOH(s)+HCl(d)=NaCl(s)+H2O(n)
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Oefening 1 7 . Vast NaI wordt zacht toegevoegd aan een oplossing bestaande 0 . 0 1 0 M P b 2 + en 0 . 0 1 0 M A g + . a ) Welk ion zal als eerste neerslaan? A g + b ) Bereken A g + op het moment dat P b I 2 net begint neer te slaan. 9 . 2 3 * 1 0 - 1 4 c ) Hoeveel NaI moet toegevoegd worden alvorens P b I 2 in 1 liter oplossing begint neer te
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please answer fast What is the product ?
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Question 9 ( 4 points ) A concentrated sulfuric acid ( back of Nelson textbook ) solution is available in a lab. A 1 0 0 - m L solution with a concentration of 0 . 8 9 m o l L is required. In the blank space please include the volume of the stock , m L required ( 1 mark ) . In the attached document Write out the pre - lab and procedure for making

Suggest an appropriate mechanism for the formation of the following products: x b )
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I actually included a picture but I don't know why it didn't appear for you. This is the picture, and I would like the solution in detail, please This is the picture i hope it will appear for you Explain the patterns and intensities of the isopropyl group in isopropyl iodide. What spectrum would you expect for the following molecule
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4 . A mixture of 1 mole of ethyl bromide and two moles of ethyl iodide at 4 0 0 C is placed in an evacuated vessel. A ) Determine the composition and pressure of the initial vapor. b ) If the container is large enough, what will be the vapor composition and pressure when the last drop of liquid vaporizes? The vapor pressures of the pure liquids

Saccarin is a nice artificial sweetener. Propose a selective synthesis of saccharin outgoing from toluene. Give reagents for each step and where warranted, reaction conditions. Discuss selectivity issues in your proposed synthesis (chemo-, regio-, stereo-, or otherwise). (2011) Saccarin is a nice artificial sweetener. Propose a selective synthesis
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Post lab questions (5 points each) Using the following data answer the questions below. Pay special attention to significant digits. Data table Crystal growth: (10 points) 1) How many grams of solute from the solution was incorporated into your original seed? (final crystal mass-initial crystal mass) 2) How many moles of solute from the solution
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A geophysicist measures the pressure in a borehole. The pressure is 5 . 5 8 1 0 7 P a . What is the pressure in megapascals? Write your answer as a decimal. M P a , N O , ,
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How many valence electrons are there in the molecule CO 2

Which one of the following molecules or ions demonstrates resonance? ( a ) B r O - ( d ) S C N - ( b ) P C l 3 ( e ) C O F 2 ( c ) H C N
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A buffer solution is composed of 0 . 0 3 5 m o l L N H 3 and 0 . 0 1 5 m o l L of the salt N H 4 C l . What is the resulting p H and pOH of this solution?
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Which of the following is not nucleophile? a ) C H 3 O H b ) ? - C N c ) C H 2 = C H - C H 3 d ) A L C l 3
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( B ) C 5 H 4 N and H 2 C O 3 C 5 H 5 N H + and H C O 3 ( C ) C 5 H 5 N H + and H C O 3 - C 5 H 5 N and H 2 C O 3 ( D ) C 5 H 5 N H + and H 2 C O 3 C 5 H 5 N and H C O 3 - 3 3 . Which set represents a conjugate acid / base pair? ( A ) H 2 P O 4 - and H P O 4 2 - ( B ) H 2 P O 4 - and H 2 P O 3 - ( C ) H 2 P O 4 - and H 2 P O 4 3 - ( D ) H 3 P O 4
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A A mixture of potassium chloride and potassium bromide weighing 3 . 5 9 5 g is heated with chlorine, which converts the KBr completely to potassium chloride. The total mass of potassium chloride after the reaction is 3 . 1 2 9 g . What percentage of the original mixture was potassium bromide?
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. What is the final temperature when heat in the amount of 5 . 5 \ times 1 0 3 kJ is added to 1 0 kg of solid cupric oxide CuO ( Mw = 7 9 . 5 g . mol - 1 ) initially at 5 0 \ deg C in a steady - flow process at 1 bar?

Which of the following statements are true regarding the transformation shown below (i) The product is a syn-diol and can be formed by reaction with KMnO_(4) followed by treatment with cold NaOH (ii) The product is an anti-diol and can be formed by reaction with mCPBA followed by treatment with aqueous acid (iii) The ( \pm ) symbol means both

A 50.0g sample of unknown metal at 230.0C is placed in a calorimeter containing 110g of water at 15.0C. The final temperature of the combination is 19.3C. The heat capacity of the calorimeter is 8.2J/C and the specific heat capacity of the water is 4.18J/gC. What is the energy change for the calorimeter? qcal=[?]J Enter either a + or - sign AND
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1)One of the nuclides in each of the following pairs is radioactive; the other is stable. Which is radioactive and which is stable? Explain. 2)Predict the expected type of radioactive decay for each of the following radioactive nuclides. a. 84208Po,83209Bi b. 1939K,1940K c. 3171Ga,3176Ga a. 5018Sn; b. 3376As; c. 89227Ac. a. 2047Ca; b. 1325Al. a.
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Can you help me with this question from organic chemistry lab? Let me give you information about the lab. separation of organic substances. A mixture of three solid organic substances is to be separated by an acid - base extraction of a organic solution. These substances must be used: Benzoic acid ( acidic compound ) 4 - Nitroaniline ( basic

Use the References to access important values if needed for this question. Use standard reduction potentials to calculate the standard free energy change in k J for the reaction: C o 2 + ( a q ) + C d ( s ) C o ( s ) + C d 2 + ( a q ) C o 2 + ( a q ) + 2 e - C o ( s ) E r e d o = - 0 . 2 8 0 V C d 2 + ( a q ) + 2 e - C d ( s ) E r e d 0 = - 0 . 4
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A concentration cell similar to the one shown is composed of two P b electrodes and solutions of different P b 2 + concentrations. The left compartment contains 1 . 3 5 M P b 2 + , and the right compartment contains 1 . 4 2 M P b 2 + . Calculate the cell potential for this reaction at 2 9 8 K . V In this lead concentration cell, the reaction would
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please show the working out 1. Mangoes with a moisture content of 85% (wet basis) are to be dried to a moisture content of 25% (wet basis). Calculate the time necessary to perform this drying operation using an industrial dryer. The critical moisture content is 5kg water /kg dry solid, while the equilibrium moisture content is 0.033kg water /kg
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What volume of 9 . 5 0 M H 2 SO 4 can I make with 4 8 4 mL of a stock solution that has an assay of 7 4 . 5 % and sp . gr of 1 . 7 4 ? Answer in correct significant figures

QUESTION 2 2 I want to make three different solutions from 4 0 . 0 % acetic acid in water. NOT A SERIAL DILUTION. I want to make 5 . 0 0 0 mL of a 2 . 0 0 % solution, 1 0 . 0 0 0 mL of a 0 . 5 0 0 % solution and 1 0 0 0 . 0 0 0 mL of a 0 . 0 1 0 0 % solution. How much 4 0 . 0 % acetic acid and water should I put in each of the three tubes.

PLEASE ANSWER ALL PARTS. Do not take if you cannot answer all parts please. I will give thank you so much A sealed container contains the following system at equilibrium. 2NO(g)+Br2(g)+energy2NOBr(g) Use the following information to answer the next question. A quantity of hydrogen gas is added to this system at equilibrium. 3H2(g)+N2(g)2NH3(g)
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1 4 . A semiconductor is composed of a silicon crystal that has been doped with impurities to make either an n - type ( negative ) or p - type ( positive ) material. a ) Suggest an element that could be used to make each of these types of material. Hint: consider the Lewis structure of silicon and of the elements you select for doping. b ) Light

The antipsychotic drug flupentixol is prepared by the following scheme Draw the structure of the alkyl chloride b that reacts with amine a to form compound c (draw the grignard reagent as a covalent magnesium bromide) The antipsychotic drug flupentixol is prepared by the following scheme: a c d e. Flupentixol Draw the structure of the alkyl
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a . Why is the following reaction a poor method for the synthesis of tert - butyl propyl ether? b . What would be the major product from this reaction? c . Propose a better synthesis of tert - butyl propyl ether?
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please answer all questions

NAD acts as an electron carrier, because it is capable of taking a proton from water and two electrons given to it by the electron transport chain associated with photosynthesis mechanisms, to incorporate a hydride (H) into its structure forming NADPH, according to with what is shown in the figure. About: a) Show the two molecules before and after
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match the polymers below with their FTIR spectraMatch the polymers below with their FTIR spectra. Drag the boxes to match the answers = = =
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The sodium potassium pump brings 3 sodium ( N a + ) ions into the cell and takes 2 potassium ( K + ) ions out of the cell. True False
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5 - Identify the following molecules as Aromatic, Non - aromatic or Antiaromatic:
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6. 50C- 160 - . , 3- 60, 30C- ? [4] 7. 4NH3(r)+3O2(r)2N2(r)+6H2O(r)+Q 8. - ? [2] 9. 4NH3+3O22N2+6H2O 5 / . O2- 1,5 / , - [5]
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draw the structure of the two (Z)-bromoalkenes with the molecular formula C5H9Br that have an unbranched carbon chain, and Chirality

The ionic equation for the reaction between LiOH and Saicylaldehyde is given as: Li+(aq)+C7H5O2(aq)[LiC7H5O2](s) Molar mass of LiOH.H2O=41.965g/mol. Molar mass of LiC7H5O2=128.06g/mol. Initial mass of LiOH.H2O=1.218g. Find the theoretical yield of the crystals formed. 3.72g 4.58g 3.00g 2.51g
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Rank the following radicals by deceeasing stability
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Methanol is the tuel in "canned hest" containers (e.g. 5 terno) that are used to heat food at cocktall parties. The comsustion of methand follow the thermochemical equation: How many kilofoules are Bberated by the contustion of 45.48 of methanol
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please answer and explain Identify if the following solvents would be best for an SN1 or an SN2 reaction: A. H2O B. Methanol A and B=SN1 A and B=SN2 A=SN1B=SN2A=SN2B=SN1
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I really need help with parts d and e

Consider the figure below. which of the following statmes are related The cis configuration on the left hand side is selective to H 1 and H 3 receptors The relationship between them are typical geometrical chemistry The trans configuration on the left hand side is selective to H 1 and H 3 receptors Adding alph methyl group to any of them may
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When an atom loses an electron, which one of the following is true? ( a ) The atom will decrease in size. ( b ) The atom will increase in size. ( c ) There will be no change in the size of the atom. ( d ) The atom becomes a noble gas. ( e ) none of the above
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Structure-activity-relationship of Zopiclone

Question 1 of 2 2 ( 1 point ) I Question Attempt: 1 of 1 The equilibrium constant, K c , for the reaction: H 2 ( g ) + I 2 ( g ) 2 H I ( g ) concentrations of: Part 1 of 3 H 2 at equilibrium. Round your answer to 1 significant digit. [ H 2 ] = , M , { : [ 1 0 , ] , 6 Part 2 of 3 I 2 at equilibrium. Round your answer to 2 significant digits. [ I 2
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Write the symbol for every chemical element that has atomic number less than 59 and atomic mass greater than 135.7u
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How many peaks would be observed for each of the circled protons in the compounds below?

Draw the product you expect from the reaction of (R)-2-bromooctane with CH3S^- - Use the wedge/hash bond tools to indicate stereochemistry where it exists. - Include H atoms at chiral centers only. - If a group is achiral, do not use wedged or hashed bonds on it
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predict the major substitution products of the following reaction Predict the major substitution products of the following reaction. - Use the wedge/hash bond tools to indicate stereochemistry where it exists. - If there is more than one major product possible, draw all of them. - Draw one structure per sketcher, Add additional sketchers using the
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You were asked to weigh 5 5 mg of a drug substance on a prescription balance having a sensitivity requirement of 6 mg . "Hoy would you weigh this amount with an acceptable error in weighing of 6 / using lactose as the diluent?,C 3 a . 1 2 0 mg mixture containing 5 0 mg of drug substance and 7 0 mg of lactose . 1 2 0 mg of mixture containing 7 0 mg

Carry out each of the following conversions. If you put anything in scientific notation, use the format 2.34101 (a) 300g=mg (b) 5.0cm= (c) 2L=L (d) 2ft= (e) 25L=mL (f) 300mL= at (g) 35kg=g h) 3cups(c)= Do not enter in commas with numerical answers
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Shiw retention time for each peak
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By using bond energy values, calculate the enthalpy change (AH) of following reaction for 10.00 g of nitrogen monoxide. (N-O: 222 kJ/ mol; H-H: 436 kJ /mol; N-H : 389 kJ/mol; O-H: 464 kJ/ mol) 2 NO (g) + 5 H 2 (g) --- 2 NH 3 (g)+2 H 2 O (g)

Show the most stable Newman conformation for the following molecule considering the rotation around the bond marked with an asterisk.
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Prof Heaney CA MCQ on Chemistry of the Alkene Functional Group Time left 0 0 : 3 9 : 1 3 Question 7 Not yet answered Marked out of 1 3 Which of the following is true regarding the stereochemistry about the alkene bonds of structures A , B , C and D ? 2 2 a . A is a Z isomer; B is a trans - isomer, C is a cis - isomer, D is a Z isomer b . A is an E
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The standard reaction enthalpy for the hydrogenation of propene is T H 2 9 8 0 = - 1 2 4 k J m o l . While, standard reaction enthal py for the combustion of propane is r H 2 9 8 0 = - 2 2 2 0 k J m o l . Meanwhile, water standard enthalpy of formation is f H 2 9 8 0 = - 2 8 6 k J m o l . Calculate the standard enthalpy of combustion of propene. (
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Use the standard reduction potentials given below to predict if a reaction will occur when Cu metal is put into a 1 M aqueous P b 2 + solution. C u 2 + ( a q ) + 2 e - C u ( s ) , E r e d = 0 . 3 3 7 V P b 2 + ( a q ) + 2 e - P b ( s ) , E r e d = - 0 . 1 2 6 V If a reaction will occur, write a balanced net ionic equation for the reaction. If no
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Which of the following compounds are ionic compounds? Check all of the boxes that apply. C a C l 2 C 6 H 1 2 O 6 MgO N a 2 O S i O 2
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Draw the structure of the starting compound that would undergo the following reaction.
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Which of the following statements are true regarding the transformation shown below (i) The product is a syn-diol and can be formed by reaction with KMnO4 followed by treatment with cold NaOH (ii) The product is an anti-diol and can be formed by reaction with m CPBA followed by treatment with aqueous acid (iii) The () symbol means both enantiomers
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Question 6 At 3 5 \ deg C , the vapor pressure of chloroform is 0 . 3 5 9 atm and the vapor pressure of benzene is 0 . 1 9 1 atm. Assuming ideal behavior, what is the vapor pressure of chloroform above the solution containing 3 . 0 0 mol chloroform and 1 . 0 0 mol benzene? 0 . 0 6 9 8 atm 0 . 6 8 4 atm 0 . 0 1 2 7 atm 0 . 2 6 9 atm 0 . 5 8 3 atm

Alkynes undergo many of the same reactions tgat alkenes do. what organic product would you expect when the following compound is treated with 1 equiv HBr organic chemistry question please help - You do not have to consider stereochemistry. - Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right
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1. What are the challenges and risks in cloud based solutions? 2. Discuss the importance of service contracts in Service-Oriented Architecture ( S O A ) and how they contribute to the s u c c e s s of S O A implementations. 3. What is a Hypervisor in Cloud Computing and its types? 4. List out the key highlights of Open Stack. 5. Differentiate the

what products would you expect from the following reaction What product(s) would you expect from the following reaction? (C6H5)CH2CH=CHCH3NBSCCl4? - You do not have to consider stereochemistry. - If more than one structure fits the description, draw them all. - Draw one structure per sketcher. Add additional sketchers using the drop-down menu in
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A compound A with a molecular formula C 5 H 1 0 O gives the following results: a ) , A + 2 , 4 - D N P : positive b ) A + Tollens' test : negative c ) A + N a B H 4 gives B d ) B x + concentrated H 2 S O 4 gives C ( C 5 H 1 0 ) e ) C + O 3 D + E ( C 3 H 6 O ) Compound D gives positive result with Tollens' reagent while E gives otherwise. However,
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Question 6 [ 1 0 Marks ] : Find the thickness of the undoped spacer layer d 0 so that the two - dimensional electron gas concentration of an AlGaAs / GaAs heterojunction is 1 . 2 5 1 0 1 2 c m - 2 at zero gate bias. Assume that the n - AlGaAs is doped to 1 1 0 1 8 c m - 3 and has a thickness d 1 of 5 0 n m , the Schottky barrier height is 0 . 8 9
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True or False. a . For molecules with similar molecular weights, the dispersion forces become stronger as the molecules become more polarizable. b . For the noble gases, the dispersion forces decrease while the boiling points increase as you go down the column in the periodic table. c . In terms of the total attractive forces for a given
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Enzymes are that speed up biochemical reactions by View Available Hint(s) vitamins, lowering the activation energy globular proteins; raising the activation energy globular proteins, lowering the activation energy lipids: lowering the activation energy
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Bombealocinetry is the clasuk method for determining the calories in qui fooks. A 1.50g sample af pure sucrose is burned in a bomb What a A F for the combustion of 1 mol of nucrove. C12H22O12 ? intint eTextbookand Medis How many dietary Caloties per gram dees suctose provide when metatielled
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Psychological stress can be reduced with a trial run to ensure show day success by reducing water retention. What is one molecule responsible for said water retention? Select one: a . Estrogen b . Sodium c . Cortisol d . Potassium

pleas ehelp, thank you Draw a structural formula of the SS configuration of the compound shown below. - Use the wedge/hash bond tools to indicate stereochemistry where it exists. - Include H atoms at chiral centers only. - If a group is achiral, do not use wedged or hashed bonds on it
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write the balanced chemical equation fir the acid - base neutralization reaction occurring in this titration. 2 . you initially beginnwith 0 . 1 3 9 3 M hydrochloric acid solution. is this solution acidic or basic? support your positoon by calculating the pH of the solution. 4 . sketch a sample pH curve showing how the pH of the titrated solution
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Use standard reduction potentials to calculate the equilibrium constant for the reaction: Hint: Carry at least 5 significant figures during intermediate calculations to avoid round off error when taking the antilogarithm. Equilibrium constant at 2 9 8 K : G 0 for this reaction would be than zero.
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SOLVE WITH ICE TABLE 6. Given that Keq=4.50103 for the reaction below, determine the equilibrium concentrations of N2O4 and NO2 when the reaction begins with [N2O4]=0.300mol/L. N2O4(0)2NO2(0)
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The absorption and emission spectra were recorded for the molecule shown in the figure below. Explain, using a Jablonski diagram, the likely photophysical processes which gave rise to the bands observed in both spectra. The spectra were recorded in hexane. How would the spectra change if the following experimental parameters changed; (i)
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I have an expermint called Saturated Vapor Pressure of Pure Liquids and I have the numbers. I need someone to write a report for me
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The tosylate of (2S,3S)-3-phenylbutan-2-ol undergoes an E2 elimination on treatment with sodium ethoxide. draw the structure of the alkene that is produced - Use the wedge/hash bond tools to indicate stereochemistry where it exists. - You do not hawe to explicitly draw H atoms. - If a group is achiral, do not use wedged or hashed bonds on it
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What is the name of the covalent molecule S 4 N 2
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For the following reaction: a. How many moles of aluminum are needed to react completely with 1.2mol of FeO ? b. Calculate the number of moles of Al2O3 that are produced when 0.60mol of Fe is produced in the following reaction? 2Al(s)+3FeO(s)3Fe(s)+1Al2O3(s)
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4 - Provide a list of necessary reagents for transformations ( a ) to ( g ) . Multiple steps may be requir ( b ) ( d )
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A sample of ( mathrm{N}_{2} mathrm{O}_{5} ) was placed in a container to allow the following reaction to occur: [ 2 mathrm{~N}_{2} mathrm{O}_{5}(g) ightarrow 4 mathrm{NO}_{2}(g)+mathrm{O}_{2}(g) ] The partial pressure of ( mathrm{N}_{2} mathrm{O}_{5}(g) ) was measured during the reaction and recorded in the table below. [ egin{aligned} ext { or }
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3 . The vapor pressure of liquid ethylene is 4 0 . 6 atm at 0 0 C and 2 4 . 8 atm at - 2 0 0 C . a ) Estimate the ideal solubility of ethylene in a liquid at 2 5 0 C and 1 atm pressure. b ) How many grams of ethylene will ideally dissolve in 1 0 0 0 g of hexane?

How do you name these compounds? Please explain in detail.
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Question What will happen to the following equilibrium if the volume of the vessel in which the equilibrium is contained increases? 2 C H 4 ( g ) C 2 H 6 ( g ) + H 2 ( g ) Select the correct answer below: It will shift to the right. It will shift to the left. There will be no change. It depends on the factor by which the volume increases.
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This energy dagram shows the allowod enorgy levels of an electron in a certain atom. (Note; the si prefix 'zepto' means 10"-21., You can find the mearing of any SI preflix in the ALFKS Data tab.) Use this diagram to complete the table below
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Q1. Using your own words, explain the meaning of the statement Most IT problems are workflow problems, not software problems. ?

How can you efficiently handle extremely large CSV files in Python (over several gigabytes) when standard libraries like pandas run out of memory?

What is the difference between a B-tree and a B+ tree , and where would you prefer to use each?

What is the difference between preemptive and non-preemptive scheduling in operating systems?

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