QUESTION 14 Cuáles de los sigulentes enlaces (en el rectángulo) vibra a la frecuencia más alta? H,C- H.C: CH H,C- 2. 31 OA2 140 1a0

Q: 17) A coffee-cup calorimeter is filled with 200.0 mL of water at 22.1 °C. A piece of metal at 48.6…

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Q: Calculate [OH⁻] and [H₃O⁺] in each solution and determine whether the solution is acidic, basic, or…

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Q: Propan- 1-ol The color of the substance became clear L& NAOH 9. and colorless, this indicates a…

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Q: Search for the chemical equation that would represent the following dissolutions. Calculate its…

A: NaOH(s)+aq=Na(aq)+OH^-, ∆H=-44.51Kj/mole NaHCO3(s)+aq=Na(aq)+HCO3^-,∆H=-18.61Kj/mole

Q: Which statement is FALSE regarding the titration of a weak acid with a strong base? HA + OH" → A" +…

A: HA + OH−→ A− + H2O C. Before strong base is added, the pH is driven by the ionization of the weak…

Q: What characteristic charge do atoms in the first column of the periodic table have when they become…

A: Given, The first column of the periodic table they become ions.

Q: . The ammonium ion (NH4+) reacts with nitrite ion (NO2-) to yield nitrogen gas and liquid water. The…

A: Ammonium ion and nitrite ion reacts to produce nitrogen gas and water.

Q: Determine which element is oxidized and which element is reduced in the following reactions (be sure…

A: First we need to write the oxidation number of every atom in the equation

Q: In the laboratory, strontium chromate (Ksp = 3.6 x 10-5) can be prepared by mixing solutions…

A: Given,  strontium chromate (Ksp = 3.6 x 10-5)       a. A solution has the following initial…

Q: Una solución de HCl a cierta temperatura tiene una densidad de 1.189 g/mL. La concentración de la…

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Q: Given set  A = {all elements that belong to Halogen family}, use roster form to rewrite this set…

A: Roster form description is a form in which a set of elements are listed in a bracket using commas.

Q: When MoO3 and Zn are heated together they react according to the following unbalanced equation:…

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Q: What is the solution of the answer in Average NaOH concentration?

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Q: Find the ΔH (in kilojoules) for the reaction below, given the following reactions and subsequent ΔH…

A: Hess's law states that enthalpy of overall reaction is equal to sum of enthalpies of all steps…

Q: Calculate

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Q: 4. Draw an energy level diagram for bromine

A: Energy level diagram for bromine

Q: An acid is: A base is: (b) Explain the difference between: (i) a strong acid and weak acid and (ii)…

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Q: Categorized the H+, Cl-, O2, Ba2, CH4, and CS2 separately if they are a CATION, an ANION, or…

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Q: 2. A carbonate buffer of pH 10 is needed by a chemist. How many grams of Na,CO, is needed to…

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Q: A piece of aluminium displaces at 11.2 ML of water when placed in a graduated cylinder.  Given that…

A: Given:: Volume = 11.2 ml  mass = 36.2 g density =?

Q: Question 31 Chemically, these are triacylglycerols, triesters of glycerol with three long- chain…

A: The given questions are based on biomolecules.

Q: An unknown sample containing mixed alkali (naoh, nahco3, or na2co3) was analyzed using the double…

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Q: 12:19 1 Jessica - Chemical Acid-Base Equilibria 回Q K = (b) Calculate the pH of 0.1mol dm potassium…

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Q: To do: Identify the oxidizing agent and reducing agent in the reactions. 1.…

A: Oxidising agent oxidizes the other species but itself gets reduced.  reducing agent reduces the…

Q: a.) Define what is a salt bridge  b.) what is the role of the salt bridge in galvanic cells? c.)…

A: Salt brige is used in galvanic cell, it has a great role in electrochemistry.

Q: Write the splitting pattern of hydrogens in vinyl chloride. Hb Hc На CI (A) Ha = doublet, Hb =…

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Q: 23. The nucleus of an atom is made up to a. Proton and neutrons b. Electrons and protons c.…

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Q: Compound X, C24H36B1204, reacts with excess H2/Pd to give C24H46B12O4. Compound X has rings and…

A: Molecular formula of reacts= C24H36Br2O4 Molecular formula of product = C24H46Br2O4

Q: Increasing in temperature: a. H20) = H20) (+AH), b. N2(9) + 3H2(9) 2 2NH3(9) (-AH) c. If the…

A: Given,  Predict the direction of the following reactions and defend your predictions using Le…

Q: 1. The Ecell of a reaction was found to be +0.78 V. What is the ΔGo of the reaction? ne = 1 mol

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Q: The hybridization (sp? sp??sp3? sp4?) of the carbon in formic acid is and the bond angles around the…

A: Steric number = no. of bond pair + no. of loan pair ->steric number = 2=> sp          =3 =>…

Q: The density of formadahyde is 815.3 g/L What is the density given in G/mL? Given 125 liters of…

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Q: In the reaction below, which is the acid? CH;OH + NaH CH;O`Na* + H2 O a. CH3OH O b. CH;O°NA* Oc H2 O…

A: Bronsted-Lowry acid-base theory: The Bronsted-Lowry acid-base theory states that the acid is a…

Q: Which element is in excess?

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Q: In fusion reactions to make superheavy elements, energy is required to bring the two nuclei together…

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Q: Question 28 The monosaccharide shown is CHO H- -O- A. an aldohexose B. an aldopentose C. an…

A: 28)  We have to classify the given structure of the monosaccharide

Q: Determine if the synthesis of sulfuric acid is a spontaneous reaction at 25°C. Chemical Equation: S…

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Q: pls answer number 3

A: In following 3rd question Na2HPO4 and H2PO4 calculate the weight required to prepare 200ml of buffer…

Q: = long form electron configuration for phosphorous.

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Q: Draw the structure of the products of the following reactions Aniline + BSC, excess NaOH (DRAW…

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Q: Identify the product Q in the following reaction. CH,N2 Q CH,ОН, hv -COOE -COOME (В) (A) -COOME…

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Q: 1. When a mole of metal oxide decomposes, enthalpy change is positive. What de it tell you about the…

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

Q: A 25.00 mL aliquot of 0.100 M NH3 is titrated with 21.00 mL of 0.0900 M HCI. Calculate the pH. Kb =…

A: In this question, we will determine the pH of the Buffer solution which is make by after mixing of…

Q: 1. Melting point technique 2. Recrystallization technique| 3. Extraction (understand how to separate…

A: As per the guideline, since you have asked multiple questions, we have solved the first question for…

Q: 1) Separation Techniques: Molecular and Transport Properties & Factors for Feasible Separations For…

A: a) Chloroform - Water -  The mixture of Chloroform and water can be separated by following methods -…

Q: Using the table of the weak base below, you have chosen Ammonia as your weak base in the buffer…

A: Here we can solve the given question by applying Henderson Hassel-Blach equation to buffer solution.

Q: ge transformation. s well as q, w, AU

A: Given: Temperature rise is 80oC CV,m=3/2 R at 20oC

Q: How much heat (in kJ) is required to warm 64.8 grams of ice to steam? The ice starts at an initial…

A: Given that -  Mass of ice = 64.8 g  Initial temperature of ice = -16.2°C  Final temperature of steam…

Q: Find the pH of a 0.0025 M HCl solution.

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Q: certain reaction has a enthalpy value of -157 kJ/mol and an entropy value of -97.6 J/mol K at…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…