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Science
Chemistry
Atomic Structure
Calculate the fundamental particles in HCN and na2co3 and k2so4
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What are you calling fundamental particles? Do you want electrons, protons, neutrons, or do you want electrons, up quarks and down quarks?
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What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10-10?
Rate my answer please For your understanding: HCN ⇌
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4.95
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Calculate the volume of a 1.25 M solution of HCN made from 0.31 moles of HCN.
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4.03 L
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Calculate the pH of the solution resulting from the addition of 75.0 mL of 0.15 M KOH to 35.0 mL of 0.20 M HCN (Ka (HCN) = 4.9
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I don't buy that. I'm interested in how you obtained 9.52. Initially HCN millimols = mL x M = 35.0 x
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Calculate the volume of a 1.25 M solution of HCN made from 0.31 moles of HCN.
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millimols KOH initially = mL x M = 75.0 x 0.15M = 11.25 millimols HCN initially = 7.0 ..........KOH
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Calculate the number of moles of excess reactant that will be left-over when .350 g if HCN react with .500 g of 02:
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Balance the equation before you do anything. mols HCN = grams/molar mass mols O2 = grams/molar mass.
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