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A buffer is made up of 355 mL each of 0.200 M NaHCO3 , and 0.134 M Na2CO3 . Assuming that volumes are additive , calculate
A. The pH of the buffer
B. The pH of the after the addition of 0.0300 mol of HCl to .710 L of buffer
C. The pH of the after the addition of 0.0300 mol of KOH to .710 L of buffer
At standard temperature, a gas has a volume of 371 mL. The temperature is then increased to 131C, and the pressure is held constant. What is the new volume?
How much heat in kilojoules is evolved or absorbed in the reaction of 244.0g of calcium oxide with enough carbon to produce calcium carbide?
Calculate the mass of TRIS to use when it is mixed with 100 mL of 0.50 M HCl to prepare 1.00 L of buffer of pH=7.40. Also calculate the total concentration of the buffer.
the lambda max for one Cu2+ complex ion is longer than the lambda max for a second Cu2+ complex ion, is the coordinate covalent bonding between ligands and Cu2+ stronger in the first or second complex? Briefly explain.
If you added 75ml of a 0.555M solution of NaCl to enough water to produce 950 ml of solution, what would be the resulting molarity?
Calculate the mass of water produced when 9.11 G of butane reacts with excess oxygen. Express the mass of water numerically in grams.
The molar extinction coefficient of benzene equals 100 M-1cm-1 at 260 nm. Assume this number is independent of solvent. (a) What concentration would give an absorbance of 1.0 in a 1 cm cell at 260 nm?
A solution has a volume of 2.0 L and contains 36.0 g of glucose (C6H12O6). If the molar mass of glucose is 180 g/mol, what is the molarity of the solution.
Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
Determine the mass of snow that can be completely melted - Determine the mass of snow (frozen water) that can be completely melted with the application
the Cu^+ and I^- ions in equilibrium at 298 K are both equal to 1.03 x 10^-6 M, what is the value of delta G for the reaction?
If 42.0 g of CO and 27.0 g of H2O are placed in a 5.0 L flask with 132 g of CO2 and 6.0 g of H2 and allowed to reach quilibrium, what will the concentration of CO be when the system finally reaches equilibrium?
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