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Calculate the molality, molarity, and mole fraction of FeCl3 in a 36.9 mass % aqueous solution (d = 1.243 g/mL).
molality _______ m
molarity _______M
mole fraction_______
List all the covalent and non-covalent interactions that exist between amino acid residues in a polypeptide (besides the peptide bonds).
How many grams of magnesium chloride must be dissolved in 568 g of water to give a solution that freezes at -2.38°C
A student titrated 20.0 mL of 0.410M HCL with 0.320M NaOH. Find the pH, [H3O+], and [OH-] when 21.50mL of titrant has been added.
Which of the following compounds will have the highest molar solubility in pure water. Answer A. PbSO4, Ksp = 1.82 × 10-8 B. MgCO3, Ksp = 6.82 × 10-6 C. AgI, Ksp = 8.51 × 10-17 D. PbS, Ksp = 9.04 × 10-29 E. FeS, Ksp = 3.72 × 10-19
naisolid is gradually combinednbsp to a solution that is 0.011 m in coppernbsp and 0.011 m in silver then calculate
What volume will 454 grams (1 lb) of hydroigen occupy at 1.05 atm and 25 C.
What is the half-life of this reaction assuming first-order kinetics?
Mass of nitrogen, Suppose 5.0 liters of Nitrogen (diatomic) is at a temperature of 40 degrees C and a pressure of 1.5 ATM
A gaseous mixture of O2 and Kr has a density of 1.140 g/L at 415 torr and 300. K. What is the mole percent O2 in the mixture?
Calculate the pH at 25 degrees C of a 0.25-M aqueous solution of oxalic acid (H2C2O4). (Ka1 and Ka2 for oxalic acid are 6.5 x 10^-2 and 6.1 x 10^-5, respectively.)
What is the pressure exerted by some nitrogen gas collected in a tube filled with water on a day when the room temperature is 18.0ºC
The following set of data was obtained by the method of initial rates for the reaction: S2O8^2- (aq) + 3 I- (aq) ==> 2 SO4^2- (aq) + I3- (aq) What is the initial rate when S2O8^2- is 0.15M
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