- Hydrogen gas and oxygen gas release 482.6 kJ of heat when they combine to form steam. Is this reaction endothermic or exothermic? In which direction does heat transfer (between system and the surroundings) for this reaction? Is AH for this reaction positive or negative?

Q: The half-life of a certain element is about 5600 years. Use the radiometric dating formula to…

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Q: Determine the oxidation state of the metal atom in each of the following complex ions. jon oxidation…

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Q: (b) Which chemicals are listed as hazardous? O HCI O N2OH. O CH;CO,H O NaCH;CO2

A: Chemical is any substance that has a defined composition. Some chemicals found in nature such as…

Q: A standard galvanic cell is constructed in which a Cd2+ | Cd half cell acts as the cathode. Which of…

A: The lower standard reduction potential always undergo oxidation  The higher standard reduction…

Q: If a 30.0 A of current flow through an electrolytic cell containing molten aluminum oxide for 1.0…

A: The chemical reaction :  Al3+(l) + 3e- ---> Al(s)  Current = 30.0 A  Time = 1.0 hour  Weight of…

Q: A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3…

A: First of all we have to calculate the moles of Fe2O3. From that only we get the moles of Fe and…

Q: Titanium can be produced by electrolytic reduction from an anhydrous molten salt electrolyte that…

A: Answer: Reaction of formation of Ti(s) through electrolysis is TiCl4(l) is shown below:…

Q: EXAMPLE 13.5 The rate of decomposion of aomethane (C,H,N) is sudied by monitoring the parial…

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Q: H2SO. HI HNO, (CH3)2NH CH,NH, NH3 KBr CL rønsted-Lowry acid Brønsted-Lowry base Neither

A: According to Bronsted lowry theory, an acid is a proton (H+) donor and a base is a proton acceptor.

Q: 1. In this experiment we measured K, for borax Na,B,0,(OH), 8H,0(s)=2Na*(aq)+ B,0,(OH),¯(aq)+8H,0(1)…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 3. At 48.2°C, 5.00ml of the saturated solution of bo ax was titrated with 0.235M HCI. It took 23.00…

A: Here we have to find molarity of tetraborate ion if 5ml of saturated solution of borax was titrated…

Q: Determine the Ecell for the following reaction if the reaction contains 0.725 M Ni2+(aq) in one…

A: Electrochemistry is branch of chemistry in which we deal with oxidation and reduction reaction…

Q: Draw the product of the reaction of cyclohexene with KMNO4 and NaOH at low temperature.

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Q: 1. Use the calculation of E° to determine which of the following reaction is spontaneous under…

A: Given,  (a). AuCl4- (aq) + 3Fe2+ (aq) -----> Au (s) + 4Cl- (aq) + 3Fe3+ (aq)  (b). Cu (s) + 2H+…

Q: Write a balanced chemical equation for the overall cell reaction represented as a) Fe"/Fe* //…

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Q: Show the chemical equation of Salicylic acid has been reacted with wood alcohol in the presence of…

A: Given statement is :  Show the chemical equation of Salicylic acid has been reacted with wood…

Q: In the analysis of 0.8972 g of an impure Cl- sample (35.45 g/mol), 1.399 g of AgCl (143.32 g/mol)…

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Q: 3) Given the following notation of a galvanic cell. Identify/Solve for the following: Ni| Nia||…

A: Oxidation is a reaction where electrons are ejected, and reduction is the reaction where electrons…

Q: How many milliliters of 0.100 M NaOH are needed to neutralize 50.00 mL of a 0.150 M solution of…

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Q: descriptions. nonpolar, polar neutral, polar acidic, polar basic Definition Word fill in blank…

A: If the molecule/ group has net dipole moment, then it is polar where if the group has no net dipole…

Q: 1. in人。 Na OEt Et OH 2. 3.

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Q: Q11) The following symbol indicates a) Toxic chemicals b) Oxidizing reagent c) Harmful iritant d)…

A: A substance that may cause irritation to skin , eyes or inside our body is called harmful irritant.

Q: 1. Using the following thermochemical equation, calculate how much heat is associated with the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A 0.477 mol sample of O2 gas has a volume of 12.4 L at a certain temperature and pressure. If all…

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Q: The rate constant for a particular gas-phase reaction is k = 6.8*10-42 cc2 molecules-2 s-1 when the…

A: Answer: In this question we have convert the cc2molecule-2s-1 in L2mol-2s-1. So basically this is…

Q: Calculate the AH of reaction for: C3H8 (@) + 502 (0) The values of AHO are as follows: C3H8 (@) 3CO2…

A: The enthalpy of a reaction can be obtained by the difference between enthalpy of product and…

Q: Write the cell notation for an electrochemical cell consisting of an anode where H2 (g) is oxidized…

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Q: What is the pH of an aqueous solution with .5 M NH3 & .45 M NH4Cl?  Kb=1.78 x 10-5

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Q: A multivitamin sample has a label claim of 500 mg ascorbic acid (176.12 g/mol). According to quality…

A: Ascorbic acid (Vitamin C) is a monoprotic acid with formula HC6H7O6.  Hence the balanced equation…

Q: )  If a reaction has the rate law v = k[A]1[B]0 then what is the power of M that appears in the…

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Q: A solution is prepared by dissolving 3.00 g of naphthalene (C10H8) in 20.0 g of benzene (C6H6). What…

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Q: An aqueous solution contains 0.443 M hypochlorous acid. How many mL of 0.213 M potassium hydroxide…

A: Given,  [HClO] = 0.443 M  [KOH] = 0.213 M  Volume of the solution = 125 mL  pH of buffer = 7.530…

Q: 13) Please circle any of the following nuclides are most likely to decay via electron capture: Na-26…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Q15) A piece of solid material was immersed in 5 mL water in graduated cylinder. If the volume of…

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Q: 13 11 9 pH 7 1 5 10 15 25 20

A: Answer: This question is based on the understanding of the titration curve of acid and base where…

Q: In the parallel universe, the thermodynamic data are different but the thermodynamic law are the…

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Q: In the analysis of 0.8972 g of an impure Cl- sample (35.45 g/mol), 1.399 g of AgCl (143.32 g/mol)…

A: Given, mass of AgCl precipitated = 1.399 g mass of impure Cl-= 0.8972 g

Q: What is the binding energy in kJ/mol nucleons for gallium-71? k]/mol nucleons 31;H+ 40;n3Ga The…

A: We will first calculate the mass defect. And using that we can calculate the binding energy.  ∆m x…

Q: 2. Calculate E°, AG° and K at 25°C for the reaction: - Cl (ag) 4CIO, (aq) - Cl 3CIO, (ag)

A: Given reaction is : 4ClO3- (aq) ---------> Cl- (aq) + 3ClO4- (aq)  a). Calculate standard cell…

Q: 2. Calculate the enthalpy for the following reaction: > 2NO2 (g) AH = ? kJ Nao) + 20zg) Using the…

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Q: For breakfast, the nihilistic Rick Sanchez ate 100 g of cereal mixed with 20 g of milk. A 1.500 g…

A: Given: The molar mass of N (nitrogen) is 14.07 g/mol. For cereal: The amount of cereal consumed is…

Q: Calculate cell voltages under the following conditions at 25°C: a) Zn zn" (0.50 M)| Cư* (0.10 M) Cu…

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Q: 6. Suggest the product (THF is a solvent, tetrahydrofuran): OMe NaH THE -P(O)(OEt)2 t-BuO2C

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Q: vnich molecule contalns a Csp-Csp° bond? A B "Ме Ме Ме

A: 1. B  sp - sp3 bond  sp - 2 Sigma bond+ 2 pi bond sp3 - 4 Sigma bond  2. C  That means something sp3…

Q: redict the product of the following reaction: 1. CH,CH,CH,C=OCI, AICI, 2. Br3, FeBr, 3. Zn(Hg), HCI,…

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Q: What is the chemical equation of hydrolysis of oil of wintergreen?

A: Given,  What is the chemical equation of hydrolysis of oil of wintergreen?

Q: Calculate 2NaHCO3 = Na2O + 2CO2 + H20 (Show work please!)Mass of empty evaporating dish: 46.233g…

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Q: 3) Na is present in seawater as 1.25 g Na/kg seawater. What volume of seawater as in liters(L),…

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Q: The Haber process is used to produce ammonia for fertilizers: N2(g) + 3H2(g) → 2NH3(g). The reaction…

A: Given that, the Haber process is used to produce ammonia for fertilizers: N2(g) + 3H2(g) → 2NH3(g).…

Q: what are the major peaks of the spectrum and what chemical is made

A: A question based on IR spectroscopy that is to be accomplished.