3. Which of the following is NOT TRUE about a catalyst? A) It lowers the activation energy of the reaction. B) It decreases AH for the reaction. C) It changes the mechanism. D) It increases the number of effective collisions. E) It is not consumed in the reaction.

Q: c) Draw the 10 point coordinate in a cubic unit cell.

A:

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Q: Why does the Hartree-Fock method still have errors in energy calculations for many-electron atoms ?

A: To explain why Hartree-Fock method have errors in energy calculations for many-electrons atoms.

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A: Hey there! Please check out the answers.

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Q: Propose a structure that is consistent with the following spectra.

A: given propose a structure

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A: at cathode reduction take place and at anode oxidation take place  here correct option is c

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Q: Absorbance (b) -490 nm x=20 300 CIT 400 500 670 λ/nm 25 20 15 / 10 cm-¹ Figure 1 UV-vis absorption…

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Q: An aqueous solution has hydronium concentration [H3O+] = 9.8 x 10-5 mol L-1. What is the pH of the…

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Q: ) Use the following thermochemical equations (and Hess’s Law) to calculate ΔH°rxn for    B2H6(g) …

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Q: 7. Choose one of the factors affecting rate that is NOT Chemical Nature of Reactants or Catalysts.…

A: 1) temperature 2) surface area

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Q: IR Spectrum (KB disc) 4000 100 80 60 40 20 3000 77 124 40 B3C NMR Spectrum (100 MHz CDC, solution)…

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A: Oxidation involves loss of electrons whereas reduction involves gain of electrons.

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Q: A 124.5 g sample of an unknown metal absorbs 1276.25 J of heat, upon which the temperature of the…

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A: Lewis structure is defined as representation of valence electrons in a molecule or polyatomic ion.

Q: H CH ₂ CH 3 -CH3 CH ₂ 3

A:

Q: What is the pH of the solution given by: [H3O+] = 5.8 x 10^-3 Give correct significant figures

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Q: What does temperature measure? * O Heat of Molecules O °C Average Kinetic Energy of Molecules O…

A: Choose the correct option for temperature measurement ?

Q: Learning Task 2.

A: Given,

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Q: A 600 mL water sample collected from an industrial wastewater plant was found to contain 9.45 ug of…

A: Given that -  Volume of waste water sample = 600 mL = 600 cm3  Mass of solute lead Pb = 9.45 ug…

Q: resistance management should start before resistance happens. true

A: The substances that are used for controlling pests are known as pesticides.

Q: What is the systematic name of the following compound? Pentanone Hexanal Hexanone Pentanal QUESTION…

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Q: 1. A student constructed a voltaic cell using nickel and lead as electrodes. He also used 0.50 M…

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