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In water open to the atmosphere (CO2 = 390 ppmv), at what pH must the water be buffered so that the carbonate concentration is twice the bicarbonate concentration?
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
find delta h for the combustion of ethanol c2h6o to carbon dioxide and liquid water from the following data. the heat
the specific heat of ethylene glycol is 2.42 jg-k. how many j of heat are needed to raise the temperature of 62.0 g of
Structures of Acids, The chiral carboxylic acid A (C5H6O2) reacts with 1 mol of hydrogen gas on catalytic hydrogenation.
if a 5.0ml aliquot (portion) of the above solution was taken and diluted to 500.0mL. What is the concentration of this new solution
the compound sucrose is commonly known as table sugar. the chemical formula of sucrose is C12H22O11. How many hydrogen atoms are resent in 1.50 x 10^-4 mol of sucrose
If an ideal monatomic gas originally at 26 C and 1.4 bar is allowed to expand reversibly as well as adiabatically from 1.9 L to 4.1 L, explain how much heat will be required to restore the system to its original temperature at constant volume
Write balanced chemical equations for all reactions in the sequence. Water and NO2 (g) are produced in the first step
A current of 0.0100 A is passed through a solution of rhodium sulfate, causing reduction of the metal ion to the metal. After 3.00 h, 0.038 g of Rh has been deposited. What is the charge on the rhodium ion, Rhn+? What is the formula for rhodium su..
what is the final volume of the air saturated with water vapor if the total pressure is maintained at 1 bar? what are the mole fractions of N2, O2, and H20 in the moist air? Assume all gases are ideal
what volume of 0.240 m cacl2 must be added to 335 ml of 0.189 m kcl to produce a solution with a concentration of 0.245
Intended for a particular isomer of C8H18, the subsequent reaction produces 5113.3 kJ of heat per mole of C8H18(g) consumed under standard conditions.
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