13. The equilibrium reaction of HF with water is    HF(aq)  +  H2O(l)  ⇔    H3O+(aq)  +  F-(aq) The value of Kc is 6.8 x 10-4. If the initial [HF} is 0.500 M, what is the equilibrium [H3O+]? Group of answer choices 2.6 X 10-2 M none of the answers are correct 1.8 X 10-2 M

Q: (aq) 2. 2 Mg(s) + O2(g) → 2 MgO(s) 3. Sn4+ (aq) + Fe²+ (aq) → Sn²+ (aq) + Fe³+ (aq)

A:

Q: Aluminum will react with bromine to form aluminum bromide (used as an acid catalyst in organic…

A:

Q: vaporizes at 100°C or 373.15K, with the enthalpy of steam being AH (40,657 kJ/mol). vape The Gibbs…

A: Given : Temperature =373.15 K Enthalpy of vaporization = 40.657 KJ/mol

Q: 500.0 mL of 0.100 mol·L HCl(aq) was added to a high quality insulated calorimeter containing 500.0…

A:

Q: When 56.6 g of calcium and 30.5 g of nitrogen gas undergo a reaction, how many grams of calcium…

A: Given  Mass of Ca= 56.6 g Mass of N2 = 30.5 g Mass of Ca3N2 = ?

Q: 1. Which pipette would you use for measuring the following volumes? (Put "Yes" in the appropriate…

A: A P20 pipette is used to measure volumes in the range of 2 μL- 20 μL. A P100 pipette is used to…

Q: 19. Calculate the number of moles oh hydrogen atoms in 17.4 g of (NH4)2SO4. A. 2.13 mol H atoms B.…

A:

Q: Determine the concentrations of all species present in a 0.3 mol/L solution of potassium fluoride…

A:

Q: 17. Calculate the number of moles of ethylene glycol, C2H6O2, used as antifreeze in cars, that are…

A: The no of moles of the substance is the ratio of the given mass of that substance to that of molar…

Q: The graph below shows the heating curve for a sample of water in an open container (ie. 1 atm…

A:

Q: what’s the pOH ph=2.5

A:

Q: Mg²+ + Cl₂ + 2NaHCO3 → MgCO3 + 2NaCl + H₂O + CO₂ If the reaction makes 0.005g of MgCO3 then about…

A: Given :  Mass of MgCO3 produced = 0.005 g  Also,  Molar mass of MgCO3 = 84 g/mol  Molar mass of Mg =…

Q: Calculate the percent composition of H in NH4NO3, a compound used as a fertilizer. A. 27.8 B. 8.07…

A: Recall, Compound= NH4NO3 %H = ?

Q: (24) The gold-plating of a ceramic figurine requires a total of 2.78 g of solid gold. If the current…

A: Please find your solution below : Electroplating is a process that uses electric current and the…

Q: Consider the reaction shown below at equilibrium with solid BaSO4 present. BaSO4(s) Ba2+, + SO4²…

A:

Q: Multiple choice question : 1-Atomic absorption A- The sample passes to monochromator the to the…

A: Hey there! Please check out the answer. Correct answer : C

Q: From the data at 25 °C: Compute the standard heat of formation of FeO (s) and Fe₂O3(s). Fe₂O3(s) +…

A: Enthalpy of formation is defined as the change in enthalpy when one mole of a compound is formed…

Q: The melting point of various ratios of mixtures of urea and acetaminophen) were determined and the…

A: We will plot concentration (%) on y axis and melting point on x axis. Moreover, the melting point…

Q: A 0.968 gr sample of impure solid sodiumhydroxide NaOH was dissolved in 200 mL of aqueous solution.…

A: Here we are required to find the percentage purity of original sample

Q: An electrochemical cell uses Ag and Zn as electrodes. Based on the reduction potentials, the (blank)…

A: Dear student , since you have posted multiple questions we will allow to solve only first question…

Q: Please give me a paragraph of discussion for Polyethylene (PE) membrane.

A:

Q: XIDIZED Cr+ + Sn4+ 72+ our answer

A: The given reaction,  Cr + Sn4+ -----> Cr3+ + Sn2+  Half reaction splitting  Cr ----> Cr3+ + 3e…

Q: 3. Which structural formula below represents an unsaturated hydrocarbon? Explain. H H H H H-C-H…

A:

Q: The concentration of H+ in a glass of milk is around 3.2 x 10-7 The pH must then be around (Round to…

A:

Q: Identify the following reaction if it is redox or not, HNO3 + SO2  ----> H2SO4 + NO2.

A: Redox reaction is type of reaction in which oxidation and reduction takes place.

Q: Rush. Determine the pH when the following amounts of titrant is added in the following titration:…

A: CH3NH2(aq) is a weak base and HCl is a strong acid. Volume of 0.20 M CH3NH2(aq) taken = 75.0 mL…

Q: 3.3 Explain the reasons why the reactions provided below DO NOT work and show the other expected…

A: Reasons: a.  The initial reaction will not work because nitrogen of aniline will react fast with…

Q: Chemistry 5. Describe the products of the reaction OH H.SO

A: -> Alcohol reacts with H2SO4 and give dehydration reaction the product formed is alkene.

Q: 1. What is the molarity of a 3 L solution containing 60 g of KBr? 2. Determine the mass of HCI in…

A: In this first question, we need to determine the morality of the KBr solution and in another…

Q: At a temperature of 525 K the Keq = 0.041 for the following reaction: PCl5(g) ⇄ PCl3(g) + Cl2(g) At…

A:

Q: When a large amount of water was poured on 100 gr of calcium carbide CaC₂, 28.3 gr acetylene C₂H₂…

A: Percentage Yield = 70%

Q: The mass spectrum of 1-ethyl-1-methylcyclohexane (MW-126) shows many fragments, with two in very…

A: Structures of two fragments

Q: REDUCED 2 As (s) + 3 C AsC13 Your answer

A: Loss of electrons is reduction and gain of electrons is oxidation.

Q: If the total  reaction is 2H2O ----->  2H2 +O2 what is the reaction in the anode given that hydrogen…

A: Given reaction is : 2H2O ----->  2H2 +O2  What is the reaction in the anode given that hydrogen…

Q: Consider the following equilibrium: PC15 (g) PCl3(g) + Cl₂(g) A 3.00 L flask contains 0.0600 mol…

A: Which one of the following is correct answer

Q: What is the entropy change if one mole of water is warmed from 0 °C to 100 °C under constant…

A:

Q: What is the purpose of the concentrated sulfuric acid in the preparation of aspirin?

A: Acid can be defined as the species that can donate hydrogen ions in a solution.

Q: Learning Task 1 Write TRUE if the statement is correct and FALSE if the statement is wrong. 1. Iron…

A: Task 1: We have to tell whether the given statements are true or false.     N.B.: According to the…

Q: Answer the following questions about electrolysis using the given electrolyte. A. H2SO4 1. What ions…

A: Electrolysis is the process of decomposition of electrolyte to obtain elements in their elemental…

Q: The Barium sulfate is often given for patients to ingest as an image enhancer for gastrointestinal…

A:

Q: ph=7.40 find the [H3O+] in m

A: pH of solution is defined as negative logarithm of hydrogen ions present in the solution.

Q: Mn2+ O OXIDIZING O REDUCING MnO2

A:

Q: What is the value of the equilibrium constant (Keq) when the following redox reaction takes place at…

A:

Q: What are the products of the following reactions?

A: products of the following reactions

Q: In a solution at 25oC, 5.25 g of sodium hydroxide, NaOH(s), is added to enough water to create a…

A:

Q: 3. Calculate AH° for the combustion reaction of butene: C4H3(g) + 60₂(g) → 4CO₂(g) + 4H₂O(I), AH° =…

A: Given, C4H8(g) + 6O2(g) ➝ 4CO2(g) + 4H2O(l) ∆H° = ? Use the following reaction with given ∆H°…

Q: Question 3 Not yet answered. Marked out of 6.00 Flag question It was found that 24.7 mL of 0.184 N…

A:

Q: Using acetylene as your only source of carbon atoms, identify a synthetic route for the production…

A: When terminal alkyne react with NaNH2 then deprotonation takes place and a strong nucleophile is…

Q: At a certain temperature, the equilibrium constant K for the following reaction is 0.0041: NO3(g) +…

A: Here we are required to find the equilibrium constant.

Q: How many oxygen atoms are present in 3.20 g of Al2(SO4)3? Express your answer in scientific notation…

A: The number of atom in 1 mole substance =6.22 ×10^23 The molar mass of substance is 342 gram