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Find the pH during the titration of 20.00 mL of 0.1350 M benzoic acid, C6H5COOH (Ka = 6.3 multiplied by 10-5), with 0.1350 M NaOH solution after the following additions of titrant.
(a) 0 mL
(b) 10.00 mL
(c) 15.00 mL
(d) 19.00 mL
(e) 19.95 mL
(f) 20.00 mL
(g) 20.05 mL
(h) 25.00 mL
a test tube containing a mixture of kcl kclo3 and mno2 having a total weight of 23.584 g was heated to compose the
Write the formula of all the different carbon dioxide molecules that can be formed from these samples. Which molecule has the largest mass?
determinenbsp the pressure in atm inside the can if a metal can of 1.00 qt contains 0.150 grams of helium at a
Calculate the mass of silver bromide that will produce 0.023 mol Na3[Ag(S2O3)2].Answer in units of g.
A balloon filled with helium gas at 20C occupies 2.91 L at 1.00 atm. The balloon is immersed in liquid nitrogen at -196C, raising the pressure to 5.20 atm.
Write the equations that represent the first and second ionization steps for selenic acid (H2SEO4) in water.
Using resonance contributors, explain why the nitrile group is a deactivator and a meta director in electrophilic aromatic substitution
In the second step of the wrinkler method, the Mn(OH)3 is acidified to give Mn3+ and iodide ion is added. Does Mn3+ spontaneously oxidize I-? Write the balanced chemical euqtion for its reaction with I- and use the standart electrode potentials to..
Use the Henderson-Hasselbalch equation to calculate the pH of a buffer that is 0.158 M HClO and 0.099 M NaClO. The Kb for HClO is 3.45 x 10^-7.
Ethanol (without catalyst) yields a di-ether in nearly quantitative yield. Provide the structure of the product. Mechanistically, provide two routes that accound for the observed product.
The boiling point of propylamine, CH3CH2CH2NH3, is 48 °C while that for its isomer trimethylamine, (CH3)3N, is only 3 °C. Explain the difference on the basis of the intermolecular forces
in hundreds of thousands of homes across the country family swimming pools and spas require sanitation and maintenance
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