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Problem- You are asked to prepare a 1 L buffer solution with a pH of 6.0. Calculate the mols of a base and an acid (provide structure/ formula) needed to create this buffer.
I need help for above question. Show each steps for the above problem.
converted completely to another molybdenum oxide by adding oxygen. The new oxide has a mass of 17.63 g. Add subscripts below to correctly identify the empirical formula of the new oxide.
phosphorus trichloride reacts with water according to thefollowing equation.pcl3l 3h2o --gt h3po3aq 3hclaqa 2.10-g
What is delta S if 3.00 moles Pb is cooled from 200 °C to 25 °C {J/K}? (B)What is the molar S° (473 K) if the value at 25 °C is 26.44 J•mol -1 •K -1
Hydrogen is more electronegative and the shared electron pair is likely to be found closer to the hydrogen atom. Hydrogen is more electronegative and the shared electron pair is likely to be found closer to the chlorine atom.
Calculate the standard entropy change for the reaction 2H2(g)+ 02(g) --> 2H_2O(l) using the data from the following table: Substance Delta Hf degrees Delta Gf degrees S degrees
titrating an unknown weak acid you hope to identify. Your titrant is a 0.0935 mol/L NaOH solution, and the titration requires 21.8 mL to reach the equivalence point. How many moles of acid were in your sample?
A mixture of water and graphite is heated to 600K . When the system comes to equilibrium it contains 0.30 mol of H2 , 0.30 mol of CO, 2.3 mol of H2O , and some graphite. Some O2 is added to the system and a spark is applied so that the H2 reacts c..
A solution of NaF is added dropwise to a solution that is 0.0144 M in Ba^2+. When the concentration of F^- exceeds __________ M, BaF2 will precipitate. Neglect volume changes. For BaF2, K sp = 1.7 X 10^-6.
Calculate the mass of potassium hydrogen phthalate, KHC8H4O4 (MM is 204.2 g/mol) needed to react completely with 20 mL of 0.1 M NaOH solution.
What is the mole ratio for magnesium oxide. What is its mass ratio? Are they the same? How do they differ.
What is the effect on the calculated concentration of the standard solution if the trials of the pure KHP samples are consistently over-titrated to a deeper magenta color?
Which of the characteristics has is NOT found in Peptidoglycan? A) The "peptido" parts of Peptidoglycan are peptide crosslinking sections that covalently bind the Petidoglycan strands together
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