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Choose the correct answer of the following, explain why it is true, and explain why the other choices are untrue: (A) high pE is associated with species such as CH4, NH4+, and Fe2+; (B) low pE is associated with species such as CO2, O2, and NO3-; (C) values of pE in bodies of water range from about 1 x 10^-7; (D) pE is a number, but cannot be related to anything real, such as is the case with pH; (E) pE uses convenient numbers to express electron activity over many orders of magnitude.
how many grams of NO2 will be produced when 2.0 L of nitrogen at 840 mmHg and 24 C are completely reacted N2+2 O2-----2 NO2
The H3O+ concentration of a 0.10M solution of acetic acid decreases when which of the following substances are added?
The oxidation of o-dianisidine (o-DIA) occurs in a nernstian 2e reaction. For a 2.27 mM alution of o-DIA in 2 M H2S04 at a carbon paste electrode of area 2.73 mm" with a scan rate of 0.500 V/min. ip = 8.19 uA. Calculate the D value for o-DIA. What..
how many grams of NACL would you need to add to 1 liter water sample ph=7 so that ionic strength equaled to 0.1M
A compound composed of elements X and Y is 1/3X by mass. The atomic mass of element X is 1/4 the atomic mass of element Y. Find the empirical formula.
A sample of H2O with a mass of 46.0 grams has a temperature of -58.0C. How many joules of energy are necessary to melt 46.0 grams of ice.
What is the principal product when p-toluidine is treated with sodium nitrite and hydrochloric acid at 0-5 degrees Celcius
What is the mass of the precipate is formed when 170.0mL of 0.200 M MgSO4 reacts wit excess Na3PO4?
Given the equation y=-5640.5+14.086. Using he slope calculate the activation energy of the reaction.
a gas at 763 mmhg and 31 degrees C occupies a volume of 4.98 L. Calculate its volume at STP in g/mole
Identify the total number of ethyl groups. (b) Independently of (a), identify the total number of methyl groups. Note that these groups are not necessarily confined to those specifically mentioned in the name.
A saturated solution of Ag2CrO4 prepared by dissolving solid Ag2CrO4 in water has [CrO4]= 6.5x10^-5M. Calculate Ksp for Ag2CrO4.
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