At about what pressure would the mean free path of air molecules be (a) 0.10 m and (b) equal to the diameter of air molecules, = 3 x 10^(-10) m? Assume T= 20 degrees celcius

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Q: Calculate the pH of a solution of 2.64 M HCN solution. The K₂ for HCN is 6.2 x 10-10.

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Q: order these bond strenght ( 4 is the strongest bond, 1 is the weakest bond

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A: PCBs or polychlorinated biphenyls are manmade Chemicals. They are oily liquids or solids.

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Q: What statement/s is correct about a 0.0010 M solution of Na2SO4 ? Show how you got your answer in a…

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Q: How many allylic hydrogen atoms are present in 1-ethylcyclohexene? 1 2 6

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Q: The BEST base for achieving -3% enolization of butanal is Select one: a. sulfuric acid b. sodium…

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Q: d. nuclear fission of Uranium-235 to form Caesium-135, four neutrons, and an unknown nuclide e.…

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Q: Calculate the solubility at 25 °C of PbCO3 in pure water and in a 0.0100M Pb(NO3)2 solution. You'll…

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Q: Give a clear handwritten answer with explanation

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Q: b Consider the reaction: Ca(s) +2 H₂O(l) →Ca(OH)2(aq) +2H2(g) AHfᵒ(kJ/mol) -285.83 -1002.82…

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Q: er ton of metal to produce magnesium by the electrolysis of me the cost (in dollars) of the…

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Q: rue or False, formation of the major product has a lower activation energy in the rate determining…

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Q: Write the pressure equilibrium constant expression for this reaction. 2 H₂(g) + O₂(g) → 2 H₂O(1) X

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Q: CH₂CH₂CCH₂CH₂CH, H₂O Br₂ tert-BuO CH₂CH₂CH₂CH₂Br CHỊCH,C—CH;CHỊCH; CH₂CH₂CH₂CH.Br CH₂CH3 tert-BuO…

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Q: b Calculate K (at 298 K) for this reaction. K =

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Q: PbCO3 will be the most soluble in which of the following? A) HNO3 (aq) B) Na2CO3 (aq) C)…

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Q: Identify if the solution is acidic, basic, or neutral. pH = 4 ✓pOH = 2 pH = 8 pOH = 4 pOH = 7 pH = 6…

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Q: Use the References to access important values if needed for this question. A 16.4 gram sample of…

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Q: Calculate the [H] and pH of a 4.73 x 10 M iodoacetic acid solution. The K, of iodoacetic acid is…

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Q: Column Chromatography works by the same principle as TLC however the silica gel is not plated on a…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.