A chemical system produces 170. kJ of heat and does 18 kJ of work. What is AE for the surroundings? O -152 kJ O 152 kJ O -188 kJ O 188 k.J

Q: IDENTIFY THE NUMBER OF ATOMS (CL, C, H, and F) in the Refrigerant Difluoromethane

A: We are given : Diflouromethane which is a organic compound and  is refrigerant.  

Q: Considering the solution of 0.005 M H3PO4, what is the following: 1. All chemical reactions: 2. Ma...

A: Here we are provided with 0.005 M of H3PO4 solution and we are required to write all the chemical re...

Q: How many millilitres of concentrated sulphuric acid, 99.0% , density 1.831 g/cm3, are required to pr...

A:

Q: prepare a standard solution of a potassium Chloride (KCI), 0.3 N in 500 ml of water. (atomic weight ...

A: Normality = Number of gram equivalents/ [volume of solution in litres]  Number of gram equivalents =...

Q: 13C NMR is less sensitive than "H NMR because of the greater mass of carbon. True False

A: In Proton NMR ,we get signal in NMR machine for each different types of protons present in the molec...

Q: Direction: Visualize a substance with the following points on the phase diagram: a triple point at 0...

A: Constructing a Phase Diagram.,

Q: 9. 10. NH2 11. 12. 13. | 14. | 15. 16.

A: Given incomplete table is :  Give the name of functional group and IUPAC names of the given compoun...

Q: How many milliliters of stock tea is required to prepare a 1% tea solution using a 50 mL volumetric ...

A: Given, Percent of tea solution = 1 % Volume of the flask = volume of the solution = 50 mL Volume (in...

Q: 23. The major product of the following reaction is (CH,CO),0 BF; Et,0, 0°C

A:

Q: Mixtures can be quantified using UV-Vis spectroscopy. True False

A: UV-Vis spectroscopy is a useful tool for the qualitative as well as quantitative analysis of various...

Q: Sect. Data Report Sheet: Quantitative Analysis of Group II Cations Unknown # Draw the flow chart for...

A: The sythesis of somewhat complex combinations of metal particles can be resolved utilizing subjectiv...

Q: АСTIVITY 4 Name the following Hydrocarbons, by using the IUPAC Rules and its common name. A =PARENT ...

A: IUPAC nomenclature  is based on 1)word root 2)suffix 3)prefix Rule- 1)Select parent chain or longest...

Q: 1. You were tasked to prepare 0.1 M acetate buffer. a. Identify the acid and the conjugate base b. C...

A: Here we have to find mass of  acid and mass of conjugate base needed to prepare 500ml of acetate buf...

Q: Watch the Iodination of Acetone before answering the questions: https://youtu.be/KkpeiuelvTI - If st...

A: Solution:  When we add starch solution in the reaction a blue colour complex formed.  

Q: Retrosynthesis. Provide the reagent(s) that would accomplish each of the following reactions. OH OH ...

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Q: neutrons

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Q: The XeO3 molecule displays approximately which bond angles (in degrees)about the central Xe? VSEPR ...

A: What is shape and bond angle in XeO3 ?

Q: MnO, + + H+ Reactants Mn²+ + CO2 H2O Products 3

A:

Q: lyethylene is crystalline polymer which to

A: Density=mass/volume=ZM/Na×Volume

Q: 1 An investor buys a European put on a share of stock for P = $3. K = $40 At what price for the stoc...

A: An European put choice can be practiced uniquely at a predefined date for example the activity date....

Q: pH: 3 [H*]: 10-3 M [ОН ]: 10-11 м 14 10-7 10-7 10-14 10-14 Dip litmus paper into the solution or add...

A: A universal indicator is a pH indicator made of a solution of several compounds that has smooth colo...

Q: Granulated sugar (sucrose, C12H22011) has an average density of about 0.71 g/cm³. Calculate the mola...

A:

Q: Why is it better to use 10.0mL or greater of a liquid in measuring its density?

A: We use 10.0ml or greater of a liquid as  graduations on the measuring cylinder make it easier to  fi...

Q: For the decomposition of hydrogen peroxide in dilute sodium hydroxide at 20 °C 2 H202(aq)–→2 H20(I) ...

A:

Q: Reagents a. CoHsCHO b. NaOH, ethanol c. Pyrrolidine, cat. H* j. Br2, H* d. H2C=CHCN e. H3O* f. LDA g...

A: The enolate is formed from the cyclopentanone by reaction with LDA. The enolate reacts with vinyl ni...

Q: Friedel- Crafts acylation. How can sulfuric acid be used as an

A: RCOOH+H2SO4>>>>>>RCO+  +H2O +HSO4-

Q: The conversion of methyl isonitrile to acetonitrile in the gas phase at 250 °C CH3NC(g)- CH3CN(g) is...

A:

Q: (29) Two B-vitamins are shown below. Examine their structures in order to answer the related questio...

A: Let us discuss both the compounds and answer each question one by one.

Q: Be sure to answer all parts. The reaction 2A B is second order with a rate constant of 51.0/M'min at...

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Q: 1. Enumerate ways to speed up the rate of chemical reactions in 2. Upon knowing the role of catalyst...

A: 1. We know that a catalyst can increase the rate of reaction by lowering the activation energy and f...

Q: What is the advantage of the adding a Lag controller for the SS model?

A:  Lag controller give a high gain at  a low frequency thus performing the function of a low pass filt...

Q: The 'H signal of alcoholic OH may be broad due to hydrogen bonding interactions. True False

A: True or false.

Q: Finf the mass of fructose (C6H12O6) present in a solution containing 9,370.0 mg acetic acid to eleva...

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Q: A solution of 1.51 g of a non-dissociating solute in 250.0 g of water is observed to boil at 124.3 °...

A: Depression in boiling point ( ΔTb ) is given by,  ΔTb  = Kb × i × m   Kb  =  Boiling point constant ...

Q: Calculate the values expected for the total alkalinity and for the phenol- phthalein alkalinity of a...

A: The total alkalinity of water is defined as the measure of the amount of OH-, HCO3-, and CO32- prese...

Q: Draw a plausible mechanism for the formation of phenol shown below. Provide explanations for each st...

A: A question based on introduction to chemistry that is to be accomplished.

Q: When an aqueous solution of CuSO, is electrolyzed copper metal is deposited. If a constant current w...

A:

Q: Draw all the products that are expected when 2-ethyl-3-methyl-1,3-cyclohexadiene is treated with HBr...

A: Draw all the products that are expected when 2-ethyl-3-methyl-1,3-cyclohexadiene is treated with HBr...

Q: You will research the major types of chemical structures and explain how they form, including: onic ...

A: There are four type of solids :-  Metallic structure Ionic networks Covalent network  Covalent mole...

Q: Give the IUPAC name of the product of the reaction between cyclopropane with Br2 in FeBr3.

A: In the absence of UV-light, cyclopropane reacts with Br2 in FeBr3 to give addition products. This ha...

Q: ΔΗ

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Q: Direction: Supply the missing information on the difference between the properties of solids and liq...

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Q: From the following heats of combustion, AH:° = -3119.6 kJ/mol kJ/mol AH:° = -393.5 kJ/mol AH:º= -285...

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Q: I CH2(CO2Et)2 R- .COOH II RCH(CO,Et)2 R. „COOH III ACCH,CO,Et R. COCH; IV RCH,COCH; R. COOH R. COOH ...

A: Iodoform test is used to detect the presence of carbonyl group. 

Q: ii0. In the presence of palladium in calcium carbonate, what is the IUPAC name of the product betwee...

A: In the presence of palladium in calcium carbonate, what is the IUPAC name of the product between the...

Q: At 700 K, the reaction 2SO ₂(g) + O₂ (g) ⇌ 2SO₃ (g) has the equilibrium constant Kc = 4.3 x 10⁶, and...

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Q: 2. Provide mechanistic explanations for the following observations (a) HCI CI (b) CI HCI

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Q: (a) Which of the following equations represents the rate law for this reaction? A. rate = k[S,Og O B...

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Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction i...

A: Given data of the following--- Mass of water = 9.81 g, molar mass= 18 g mol-1 mass of CO2 = ?,molar ...

Q: You are asked to make a flowchart that describes the process from the completion of the Grignard rea...

A: