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A) ph electrode and a reference electrode are placed in the solution and it is titrated wih .1 M NaOH. Data for the titration curve are gathered and plotted. The inflection point of the plot is at 34.6 ml. How many moles of NaOH were used to neutralize the weak acid and how many moles of weak acid were present in the same? what is the molecular mass of this weak acid?

c) assuming that the pH meter is accurately standardized, which of the following three measurements will give the more reliable value for the Ka of this weak acid? 1) at the start of titration 2) at the midpoint of the titration, or 3) at the end point of the titration. explain

E) the pH of the misture was 3.78 when 12.0 mL of NaOH was added. what is the Ka of the weak acid?

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Home >All Categories > Science & Mathematics >Biology >Open Question Gizmo1 Member since:May 08, 2008Total points:1 (Level 1)Colony Shape: Circular
Colony Size: Moderate
Colony Margin: Entire
Pigmentation: Cream Colored with yellowish tint
Appearance: Shiny
Texture: Smooth
Elevation: Convex
Optical Property: opaqueAnswer Question

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I know that Q=m(C)deltaT
. I just can't figure out how you set up the formula. I don't want you to give me the answer i just want help setting up the equation.

here's the info that i do know.

Q= 1950J
M=?
deltaT=33.8
C=.75(pyrex glass)

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Home >All Categories > Science & Mathematics >Physics >Open Question errca Member since:April 30, 2009Total points:80 (Level 1)A series combination of a 12 k resistor and an unknown capacitor is connected to a 11 V battery. One second after the circuit is completed, the voltage across the capacitor is 8 V. Determine the capacitance of the capacitor.Answer Question

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Sorry, I could not read the content fromt this page.

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