Please solve for the △H only. Thank you! Please use 4 decimal places.

Q: Equilibrium: Co(H2O)62+ (aq) + 4 Cl-(aq) ⇌ CoCl42- (aq) + 6 H2O (l) pink blue a. You put 5 mL of sto...

A: This given question is based on Le -Chatelier's principle which states that if there will be change ...

Q: Determine the molarity for each of the following solutions using the given data v 0.734 mol of CoClz...

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Q: Predict the product for the following reaction. он Он еxcess K,Cr,0,H;SO,H,0

A: This reaction is the oxidation of primary alcohol to carboxylic acid by uisng the potassium dichroma...

Q: Question 15 Find the number of significant figure in 0.0030010020 m O 3

A: Answer-15  Significant figure is "3"

Q: Synthetize 3-pentynal from 3-butynal using whatever organic/inorganic reagents are needed.

A: Organic reaction mechanisms:

Q: A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharm...

A: Given :  pH = 3.00  Concentration of HX : 0.092 M  Assume X-282 = HX   

Q: nswer the following questions about the Lewis structure for the organic molecule CH3CH2CH2COOH (see ...

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Q: 4) Given these reactants and products: NH3 + Cl, ---> N, + HCI Balance the chemical equation. How ma...

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Q: A 12.63 g sample of calcium ore was dissolved in HCI and gravimetrically analyzed, through the preci...

A: Answer: These question are based on the stoichiometric calculation, where by calculation the moles o...

Q: Assuming complete dissociation, what is the pH of a 3.72 mg/L Ba(OH), solution? pH

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Q: Direction: Complete the following equations. 238 U → 23490 Th +-_He 226 Ra → 222 Th +-_a 1. 2. 3. 25...

A: Since you have posted a question with multiple sub-parts,we will solve first three sub-parts for you...

Q: A 0.581 M solution of a weak base has a pH of 11.86. What is the base hydrolysis constant, Kh, for t...

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Q: During the solution process,  there are four different interacting forces involved: Hydrogen Bonding...

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Q: molecular mass 71; IR: 3200 (strong, broad), 2250 cm-1; no absorptions in the 1500–2250 cm- range; '...

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Q: Which of the following is NOT considered to be a factor for effective collisions? Select one: a. mo...

A: A question based on kinetics of reactions in solution that is to be accomplished.

Q: Experiment 8 Preparation of Cyclohexanone by Hypochlorite Oxidation In this experiment we will prepa...

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Q: A chemical process occurs at constant temperature and pressure within the cylinder. Reaction 8.0 L 4...

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Q: reactions, calculate how many grams of the first reactant are necessary to completely react with 56....

A: Molecular mass of K2SO4 = 39x2 + 32 + 4x16 = 174g/mol  Molecular mass of Sr(NO3)2 = 87.6+ 2(14+ 3x16...

Q: Write the Molecular, Total Ionic and Net Ionic equations for the following reactions: Sodium carbona...

A: Given, Sodium carbonate and sodium hydroxide Sodium hydroxide and iron (II) chloride Sodium hydroxid...

Q: Part A MISSED THIS? Watch IWE 15.3; Read Section 15.4. You can click on the Review link to access th...

A: Given,  CH4(g) + CO2(g) ⇌ 2CO2(g) + 2H2(g)  ∆ng = (2+2) - (1+1) = 2 Kp = 4.8 x 102  Temperature, T =...

Q: Calculate the concentration of CaHAO4 : a. In o solution which Is 0.020 M solutlon of H,CsH&O4. b. i...

A: Here we have to determine concentration of C8H4O4 ^2- in different conditions of 0.02M H2C8H4O2 . Ka...

Q: 12.62 A solution of 2.50 g of a compound having the empirical formula C,H,P in 25.0 g of benzene is ...

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Q: 8) Explain why the first reaction occurs to form the ether product, but the second reaction will NOT...

A: Nitrogen has the less electronegativity than Oxygen. So nitrogen donate its electron pair and gets p...

Q: Given the complex cation [Cr(NH3)4Cl2]+ What is the oxidation of the metal ion, and what is the coo...

A: Given,  the complex cation [Cr(NH3)4Cl2]+ The oxidation of the metal is:  

Q: Calculate the molar concentration of a solution that contains 50g of potassium hydroxide KOH in 500 ...

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Q: Calculate the pH during the titration of 20.00 mL of 0.1000 M trimethylamine, (CH3)3N(aq), with 0.10...

A: Given data : Concentration of trimethylamine = 0.100 M Volume of trimethylamine = 20.0 mL Concentrat...

Q: Explain the following reactions, use curly arrows to justify the explanation,

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Q: Question 43 If you increase the concentration of your electrolyte solution, what will be the value o...

A: Ionic strength is a measure of the electrical intensity of a solution containing ions. 44- Given -&g...

Q: Calculate the volume of saturated Ammonium sulphate to be added to a 276ml of protein solution to ac...

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Q: mixture of NaOH, NaCL and MgCl2 contains 34.6% by mass chloride and 20.0% by mass hydroxide. What ar...

A: From the hydroxide mass we can calculate the moles of Hydroxide and hence the moles of NaOH. And mas...

Q: Calculate the theoretical percentage of water in CoCl3·4H2O (Molar mass of the hydrate is 237.37 g/m...

A: Given :- chemical formula of hydrate = CoCl3.4H2O  Molar mass of CoCl3.4H2O = 237.37 g/mol  To calcu...

Q: Balance the following Redox reactions using number method 1. HNO, + H3ASO H3 AsO4+ H2

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Q: lexothermic Is this reaction exothermic, endothermic, or neither? O endothermic O neither If you sai...

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Q: CH2CH,CH3 H2C-CH HC=CH

A: ->for naming of cyclic compound first of numbering the cyclic chain such that the substituent got...

Q: student runs the reaction with 0.95 mL of o-chlorotoluene (d=1.073 g/mL) and 5.0 g of potassium perm...

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Q: [H30*] = %3D

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Q: Calculate the theoretical percentage of water in Cu2SO4·2H2O (Molar mass of the hydrate is 259.19 g/...

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Q: In which solution will Lead sulfate (PbSO4) be most soluble? 0.5 M PB (NO3)2 0.5 M NaNO3 0.5 M Na2S...

A: KSP of PbSO4 = 1.6 * 10-8                                 PbSO4 (s) ⇔ Pb2+ (aq)  +  SO42- (aq)      ...

Q: I Review | Co Part A The following reaction is exothermic: 2SO2(g) + O2(g) = 2S03(g)- What is the ef...

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Q: Complete the reaction, and identify the conjugate base, conjugate acid, and conjugate acid base pair...

A: Bronsted Lowry concept of acid and base: The species which donate or lose H+ is termed as an acid wh...

Q: 4. What is the temperature change for 500 g of each meta below, when 1,000 j of energ

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Q: How does nuclear fission generate electricity? Use the paperclip button below to attac

A:     What is nuclear Energy?  Nuclear energy comes from the binding energy that is stored in the ce...

Q: From the following data, determine standard heat of formation for diborane, B2H6(g): (1) B,H¿(g) +3 ...

A: 1->B2H6 (g)  + 3O2(g) ---> B2O3(s) + 3H2O(g)                                                  ...

Q: 15. What is the molarity of an aqueous NH solution that has a pH of 11.17? Kb= 1.8 x 10-5.

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Q: A solution contains Ag+ and Hg2+ ions. The addition of 0.100 L of 1.15M NaI solution is just enough ...

A: Since you have asked multiple question, as per our company guidelines we are supposed to answer the ...

Q: You prepared a solution by dissolving 50 g of NH. Cl to make 900 mL of solution. Find its molarity.

A: given, the mass of NH4Cl = 50 g the molar mass of NH4Cl = 53.5 g.mol-1 volume of solution = 900 mL =...

Q: The nuclei below are unstable. For each nuclei, indicate whether the nucleus would become more stabl...

A: there are radioactive isotopes , which constantly emit radiation.

Q: Experiment 8 Preparation of Cyclohexanone by Hypochlorite Oxidation

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Q: NorQuest Library MyQuest MyMail The atomic molar mass of some elements, Atomic molar mass of some el...

A: Molar mass of calcium nitrate is 164.10 g per mole

Q: om Table A-26. Assume the water in the products is in the vapour form.

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.