How many molecules are in each sample? 4.5 g H2O Express your answer using two significant figures.

Q: Is it more efficient if you use 3.0 M CH3COONa (sodium acetate) as your base in place of 3.0 M NaOH…

A: In extraction of acid it is really important to choose a right base which will convert the acid into…

Q: Identify points 1, 2, 3 and 4 on the following plot (isotherms for CO₂):

A: Isotherm is a line on a graph which represents changes in either volume or pressure under constant…

Q: 1a. Specify the reaction order for the following rate expressions: 1). rA = k(CA) 2 2) rA = k 3)…

A: We know, Order of a reaction is defined as the sum of the exponents in the rate expression of a…

Q: QUESTION: Manganese has a density of 7.33 g/cm^3 and unit cell edge length of 3.68 Å. Calculate the…

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Q: Find the concentration of I in 0.050 M AgNO3 saturated with AgI. Include activity coefficients in…

A: Given, Concentration of AgNO3 = 0.050 M Ksp of AgI =8.3×10-17

Q: Experiment 1: A student in a lab measured the mass of 380 mL of regular Coca Cola and the mass of…

A: Given: Mass of regular Coca Cola = 384 g Volume of regular Coca Cola = 380 mL Mass of diet Coca Cola…

Q: Break down the following chemicals into Pomp, if possible: H₂0(e), Ni(e). AN

A: In an atom, there is nucleus at the centre and electrons are revolving around it. Nucleus is made…

Q: Which orbital is partially filled with potassium atom? 3d, 4s, 3s, 3p

A: Atomic number of Potassium (K) is 19. It has 19 electrons in different orbitals. The full electron…

Q: How did you come up with the (A-)/(HA) = 0.905

A: [A-]/[HA] = 0.905 pH = 4.66  pKa = 4.76

Q: What are the main experimental techniques used to characterize catalysts in terms of: (i) chemical…

A: The characterization of a heterogeneous catalyst refers to the determination of its physical…

Q: Corrected Air Pressure (kPa) Calculation

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Q: Propose an efficient synthesis the following transformation: (a) The transformation above can be…

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Q: 1. a. Calculate the mass of BaSO4 required to make 50.00 mL of a 0.1500 M solution. b. Calculate the…

A: Molarity is the amount of substance that is added in particular volume of solution. Molarity =…

Q: A group of Finnish scientists announced the discovery of the first argon compound, HArF, in 2000.…

A: We know, Ar is known as inert gas due to the presence of fully filled p-orbital.

Q: Give the IUPAC name of the following compounds a) Na₂S b) ZnCl₂ c) Ba(NO3)2 d) Fe2O3 e) CO

A: IUPAC name of the following inorganic chemicals.

Q: Question 11 NH₂A B NHE 1 1 In this molecule, hydrogen (Blank 1) is the mos acidic hydrogen, and it…

A: To know the most acidic proton and pKa from the given molecule: Relative order of elution of the…

Q: OI O III IV OV XY 1 ||

A: A representation of structure of molecule in which covalent bonds are represented with one line. In…

Q: How many vibrational degrees of freedom are found in C3H8? 0 0 0 0 0 0 12 18 21 24 27 33

A: Since propane is a non linear molecule. And vibrational degree of freedom is given by 3N-6 where N…

Q: 8. A solution is prepared by dissolving 1.23 g of 2-nitrophenol (FW 139.11) in 0.250 L (pK₂ of…

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Q: HO､ -CN

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Q: 12-15 (a) HC \ H3C c=c CH3 CH3 1660 cm-¹ and 3000- 3100 cm-1 Н Н c=c CH3 CH(CH3)2 1660 cm-1

A: Intensity of peak based on charge separation(dipole moment) between 2 atoms

Q: The unbalanced reaction for the combustion of pentane (C5H12) is: C5H12 + O2 ⟶ CO2 + H2O If the…

A: The Answer to the following question is-

Q: Carry out the following syntheses, using any necessary reagents. Show any synthetic intermediates…

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Q: Write the expression for Keq for the following reactions. In each case indicate whether the reaction…

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Q: For the decomposition of hydrogen peroxide in dilute sodium hydroxide at 20 °C 2 HyOz(aq)—+2 H,O(I)…

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Q: Question 14 Which of the following are true about redox reactions? (select all that apply) Electrons…

A: A redox reaction is reaction that takes place between an oxidizing agent and reducing agent.that…

Q: Solid iodide salts react with concentrated sulfuric acid by instantly turning. Select one: O dark…

A: In this question we need to answer what will be the colour when solid iodide salts reacts with…

Q: At a certain temperature, the equilibrium constant, Kc, is 4.62 × 10-³ for the reaction Cl₂(g) = 2…

A: molar mass of Cl2 = 70.91 g/mol  mass of Cl2 = 3.52 g  moles of Cl2 = 3.52 g / 70.91 g/mol =0.0496…

Q: Which of the following statements is/are true about the quantum mechanical model of the atom? No…

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Q: 1. 0.5 mole of monoatomic ideal gas, initially at 45 °℃ and 1 bar, is heated and allowed to expand…

A: Given - Moles of monoatomic ideal gas = 0.5 mole             Initial temperature = 45°C…

Q: 2 mL of Brillian Blue FCF was mixed with 98 mL of water, total of 100 mL. What's the concentration…

A: Given -> Volume of Brillian blue FCF = 2 ml  Volume of water = 98 ml  Total volume = 100 ml =…

Q: 13. (a) . ] Determine the reduced temperature, reduced pressure and reduced molar volume of a sample…

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Q: Positive I: CHUH positive 2: CH₂OH 1 C:0 HO H || Ho H •H H positive 3: 애애 dyo -3H₂O 자 +2 +5개 OH 애 24…

A: Since you have asked a multiple sub-part question, we will solve first 3 sub-parts for you. For…

Q: 1- Calculate the atomic packing factor of a crystal of cesium chloride KCl that crystallizes in a…

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Q: Is there energy level for the hydrogen atom equal to -8.72x10^-20J? (RH=2.179x10^-18J)

A: According to the Bohr atomic model, the energy of an electron in a hydrogen atom is given by: Where…

Q: The pKa of formic acid (HCO2H) is 3.75. What is the pH of a solution of 0.2 M formic acid?

A: The pKa for the formic acid is = 3.75 The concentration of the formic acid solution is = 0.2 M The…

Q: (+) C≡N CI ZI N O=

A: We must have an basic idea about the functional groups.  Some of these are...  Double bond is called…

Q: How many structural isomers exist for C2H4Cl2?

A: structural isomers exist for C2H4Cl2

Q: Show that Rutherford's experiment can be explained by Rutherford's atomic model

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Q: Which statement is false regarding ligands discussed in lecture 1-8? Group of answer choices a cyano…

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Q: 1) For each condensed or skeletal structure below: A. Draw a complete Lewis structure. Note: show…

A: A Lewis Structure is a simplified representation of the valence shell electrons in a molecule. It is…

Q: Does CHBrClF contain a plane of symmetry? is it chiral and does it contain a stereocentre

A: Chiral carbon: The sp3 hybridized carbon atom that is attached to the four different types of atoms…

Q: what is the geometry name associated with the structure of ch4

A: Given molecule : CH4

Q: Hydrogen and iodine react to form hydrogen iodide, like this: H₂(g) +1₂(g) → 2 HI(g) Use this…

A: Given Reaction: H2 (g)+ I2 (g)  → 2HI (g) We have to find i) The amount of HI which will be present…

Q: 4. In each of the following pairs, circle the stronger base: H-67 (from above) H₂C-0 oor Brief…

A: To circle the stronger base in each of the following pairs.

Q: Propose an efficient synthesis the following transformation: MeO OMe KP The transformation above can…

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Q: Please add any missing charges to the molecules below. :OH HÖNH3 -Determine the chemical formula and…

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Q: A metal pellet with a mass of 50.0 g, originally at 85.0 °C is dropped into 150.0 g of water…

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Q: Calculate the volume in liters of a 0.36 mol/L copper(II) sulfate solution that contains 175. g of…

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Q: 1. In the provided table, identify the IMF present in each compound shown. (Answers can be…

A: Intermolecular force: The attracting and repellent forces that develop in between molecules of a…