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Determine the pH for 100 mL of a 0.4 M solution of acetic acid that has been diluted with 100 mL of water(Ka for acetic acid = 1.74 * 10^-5 M).
Determine the pH when 100 mL of 0.15 M NaOH is added to 250 mL of 0.25 M acetic acid (pKa for acetic acid is 4.76).
What is the free energy cost of pumping calcium ions out of a cell when the cytoplasmic concentration is 0.4 uM, the extracellular concentration is 1.5 mM, and the membrane potential is -60 mV?
Provide the structure of a (D-b-talopyranose)-( D-b-talopyranose) disaccharide that cannot undergo mutarotation.
Which ones of the following salts contains a metal that will undergo extensive hydrolysis when dissolved in water
If the of a 1.00-. rainfall over 1500 miles^2 is 3.60, how many kilograms of sulfuric acid, , are present, assuming that it is the only acid contributing to the? For sulfuric acid, is very large and is 0.012.
when 20ml of so2 and 20ml of cl2g are allwoed to react according to the following reaction below what is the total
Acetylene,C2H2 , can be converted to ethane,C2H6 , by a process known as hydrogenation. The reaction is C2H2 + 2H2 --> C2H6 Given the following data, what is the value of K(p) for this reaction?
what mass of calcium carbonate is required to react with 137.8 mL of a 0.6943 M sulfuric acid solution?
Calculate the half-life (in s) of a first-order reaction if the concentration of the reactant is 0.0654 M 18.4 s after the reaction starts and is 0.0112 M 82.9 s after the reaction starts.
Problem- Many gases are shipped in high-pressure containers. Consider a steel tank whose volume is 55.0 gallons and which contains O2 gas at a pressure of 16,500 kPa at 25C.
Calculate the number of theoretical plates N in the column of length L in 17 cycles. The observed resolution is 1.51.Now, calculate the plate height in the column in ?m.Estimate the resolution in 2 cycles
What subatomic particles contribute to the atomic mass of an atom?
Analysis of a carbohydrate showed that it consisted of 40.0 % C, 6.71 % H and 53.3 % O by mass. Its molecular mass was found to be between 140 and 160 amu. What is the molecular formula of this compound?
A. It is a compound that lost a pair of electrons B. It is a compound that gained a pair of electrons C. It is a compound that gained one electron D. It is a compound that lost one electron E. It is a compound that carries a free radical and a neg..
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