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A) What is the pH of a KAc/HAc buffer if the salt concentration is 60% higher than that of the acid?
B) Equal volumes of two strong acids are mixed. The pH of one is 3.80. The pH of the other is 4.80. What is the pH of the mixture?
What is the function of EACH of the following components in a membrane phospholipid? Fatty Acids, Glycerol
36.0% sodium chloride or table salt, and the rest being sodium bicarbonate or baking soda, How many grams of baking soda are present in the sample?
Two solid forms of elemental sulfur (S8) are rhombic and monoclinic, denoted A and B, respectively. For the transformation S8(s,A) --> S8(s,B), dH* = 330 J/mol and dS* = 80 J/mol*K.
What is the free Zn2+ concentration if 0.020 M Zn2+ solution is mixed with an equal volume of 2.0 M NH3? Kf for [Zn(NH3)4]2+ is 4.1 × 10^8
A solution containing both A and B in a 1-cm cell showed an absorbance of 0.726 at 267 nm and 0.544 at 312 nm. What are the concentrations, mg/L, of A and B
What is the molarity of a solution produced by dissolving 31 g of Cu(NO3)2 in a 100 mL volumetric flask?(Enter unit as M.)
How much heat is released when 105g of steam at 100.0 degrees celsius is cooled to ice at -15.0 degrees celsius? The enthalpy of vap of water is 40.67kJ/mol, the enthalpy of fusion for water is 6.01kJ/mol, the molar heat capacity of liquid water
A weather balloon has a volume of 450 L when filled with helium at 45oC to a pressure 0.80 atm. What is the new volume of the balloon in an atmosphere where the pressure
one cup is equivalent to 237 cm3. if 1 cup of olive oil has a mass of 216g what is the density of olive oil in
a sample containing 0.175 g of cl- is dissolved in 50 ml of deionized h2o. the solution is titrated to the equivalence
Just based on the orbital occupancy of electrons, is it justifiable to distinguish between the transition and inner transition elements. Should we consider any other factors
A 12 inch diameter ball of pure cobalt metal at 225 deg celcius was placed in 10 gal of water at 15 deg celcius. what is the final temperature of the water. assume no heat lost to surrounding
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