Question 8 What is the oxidizing agent in the following reaction? Cr₂O3(s) + Al(s) → Cr(s) + Al₂O3(s) A Al(s) B Cr(s) C Cr+2, (aq) D Cr₂O3(s)

Q: If 4.0 g of O2 and 4.0 g of He are placed in a 7.86 L vessel at 16.56°C, what will be the partial…

A: Ideal gas equation: The temperature, pressure, volume, and mole of the gas are related to the ideal…

Q: 1. A student constructed a voltaic cell using nickel and lead as electrodes. He also used 0.25 M…

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Q: 1. Which of the following is/are true when NH4Br is dissolved in water? 1. Both NH4+ and Brare…

A: Ammonium bromide NH4Br is a salt. When it is dissolved in water NH4+ ion and Br- ion are formed.…

Q: Designate the R/S configuration for any chiral centers in the following molecules H OH Н ОН нон НО.…

A: R, S configuration is based upon the priority order of the group attach to the chiral carbon atom.…

Q: When gamma-pyrone is treated with the strong acid HBF4, it readily forms a water-soluble salt A,…

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Q: What mass of NaNO3 is required to prepare 400 mL of a 0.45 M solution? 22.1 g 15.3 g 13.5 g 10.5 g

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Q: Write the balanced NET IONIC equation for the reaction that occurs when perchloric acid and sodium…

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Q: 2. After preparing the buffer, they decided to determine the buffer capacity of the solution by…

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Q: Ion exchange chromatography consists of?   i. stationary phase with a matrix of charged ionizable…

A: Ion exchange chromatography consists of? = D. i and ii  i. stationary phase with a matrix of charged…

Q: The numbers of amino acid synthesized in our body * O (a) 20 O (b) 30 O (c) 40 O (d) 10

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Q: THE PRINCIPAL DIFFERENCES of Four Quantum Numbers THE AZIMUTHAL THE MAGNETIC THE SPIN PROJECTION…

A: There are 4 types of quantum no--> principal quantum no, Azimuthal quantum no, magnetic quantum…

Q: 2. (a) A mixture of Litt (Os and sand weighing 9.20g is heated. After cooling, the residue composed…

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Q: Polysaccharides are O Polymers O Acids O Proteins O Oils

A: Carbohydrates are generally hydrates of Carbon with general formula of Cx(H2O)y but this definition…

Q: Mass of ethanol (solute) = 150. g Mass of solution = 978 g What is the mass of the solvent? [?] g…

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Q: 1. A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)2 is composed of a Ca²+ cation and an unknown anion X,…

A: Given,  Molarity of Ca(X)2 = 0.0250 M.  pH of the salt solution = 8.049. The Kb of X- is :

Q: 2. A water tank contains 7.50 x 10³g water. Will the addition of 1.20 x 10³g ethylene glycol…

A: Weight of water = 7.50 ×103g = 7.50 Kg Weight of ethylene glycol added = 1.20 ×103g =1.20Kg Molar…

Q: Q No 13 Given dat hydrogen peroxide H₂O₂ is 30% by mas density = 111 g/cm³ Molarity = ?

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Q: The reaction: 2NO(g) + Cl₂(g)--> 2NOCI(g), exhibits the with rate law: Rate = K[NO] [Cl]. order with…

A: Here we are required to find order of the reaction

Q: How much energy is required to vaporize 158 g of butane (C4H10) at its boiling point if its AHvap is…

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Q: Which of the following is an incorrect set of quantum numbers? a) n = 1, 1 = 0, m₁ = 0, ms=+1/2 b)…

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Q: Match the pictures in each question with the descriptions of solubility. This picture shows A) an…

A: The given picture represents ionic solid and water. Ionic solid is present below and the water is…

Q: After preparing the buffer, Joey decided to determine the buffer capacity of the solution by…

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Q: 4. Write the product and the mechanism for reaction. Write the names of starting material and…

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Q: 2. Write the product and the mechanism for reaction. Write the names of starting material and…

A: The naming of an organic compound can be done with help of rules of international union of pure and…

Q: Which of the following is a conjugate acid/base pair? A) H₂O, NH₃ B) NH₄⁺, H₃O⁺ C) H₃O⁺, NH₃ D)…

A: Given,  Consider,  A) H₂O, NH₃ B) NH₄⁺, H₃O⁺ C) H₃O⁺, NH₃ D) H₃O⁺, H₂O The conjugate…

Q: Where do you expect to find elements that are good oxidizing agents on the periodic table? Periodic…

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Q: Burger Barn makes a dipping sauce by mixing 4 spoonfuls of honey with 1 spoonful of mustard.…

A: In Burger Barn's dipping sauce, honey : mustard = 4 spoon : 1 spoon In Sandwich Town's dipping…

Q: 2. Phoebe was tasked to ensure that an enzyme responsible for keeping her species from extinction…

A: given  find buffer for store the enzyme At PH =10

Q: What volume (in mL) of 0.3000 M HCl is required to neutralize 50.00 mL of 0.8000 M NaOH?

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Q: 2. A water tank contains 7.50 x 10³g water. Will the addition of 1.20 x 10³g ethylene glycol(C₂H6O₂)…

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Q: 5. The concentration of lead in an industrial waste stream is 0.28 ppm. What is its molar…

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Q: pyruvate + NADH+H. lactate + NAD is catalyzed by the enzyme lacate dehydrogenase. Suppose this…

A: If the concentration of Pyruvate is double then no effect will be shown because rate of reaction…

Q: Place the following compounds in order of decreasing standard molar entropy Group of answer choices…

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Q: Assessment Directions: Write the letter of the CORRECT answer on a separate sheet of paper. 1. Which…

A: As per our guidelines, we are supposed to answer only one question with three sub parts. Kindly…

Q: You perform a titration between Sodium hydroxide (NaOH) and Carbonic Acid (H₂CO3). The NaOH is in…

A: Sodium hydroxide reacts with carbonic acid, to form sodium carbonate and water. The equation for the…

Q: @ D 0 F2 For which of the following processes AS is positive? O CH4(8) + H₂O(g) → CO(g) + 3 H₂(8) O…

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Q: What generalization can be made for a substance to be soluble in concentrated H2SO4?

A: Hey there! Generally the compounds, in which the functional groups, if show reactivity with…

Q: solubility of Ca(OH)2 (s) is equal to: 2+] H]/2 of the above One of the Above dition of barium…

A: Solubility equilibrium of Ca(OH)2 is Ca(OH)2(s) ---> Ca2+(aq.) + 2OH-(aq.) If solubility of…

Q: Question 3.When mixing 40 mg of a medication in 100 ml total solution, the resulting strength is ???

A: Molarity of solution is defined as number of moles of solute dissolved per litre of solution.

Q: In post-transcriptional modification, primary mRNA is modified into mature mRNA in the cytoplasm…

A: Hey there! Answer: true

Q: Match the description to the letter of the given diagram. [The vertical scales are hard to read, so…

A: Match the following description: Fast, exergonic = A Slow, equilibrium = None of these slow, minimal…

Q: n of metal ions increases ty? Electrolysis time Metal ion charge Electrolysis current mly anly d II…

A: The mass deposited at electrodes is determined by Faraday's law.  And mass deposited is directly…

Q: Draw the following organic compounds: a) 2-ethyl-4-methyl-2-pentanol c) 2-methylpropyl hexanoate b)…

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Q: Consider the reaction 2A + B --> C, where the rate law is RATE constant, k, if the time is measured…

A: Unit of rate constant can be found by finding first the order and  The unit of rate constant for a…

Q: Question 15 What is the purpose of the salt bridge in a voltaic cell? A It blocks the flow of…

A: There are two types of electrochemical cell-  1- electrolytic cell  2- galvanic cell

Q: The concentration of hydroxide ion in an aqueous solution at 25°C is 6.3 × 10⁻⁴ M. What is the…

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Q: 2. Ate Shawol and Concertina performed electrolysis to determine the identity of an unknown metal X.…

A: Mass of unknown metal X = 17.41g current = 1.495 A = 1.495 Cs-1 time = 18 hrs = 18 x 3600 s = 64800…

Q: 8. A 250.0 mL aqueous solution contains 45.1 pg of a pesticide. Express the pesticide's…

A: we need to calculate the concentration of pesticide

Q: What could be happening inside the algae that would produce the bright light? Write a possible…

A: According to the Bohr atomic model, in an atom, negatively charged electrons revolve around the…

Q: 3. Consider the HCN-KCN buffer system, which species would react if a dilute aqueous HBr solution…

A: In this question, we will see that which species in the buffer solution reacted with the HBr. This…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".