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A solution is prepared by dissolving 4.21 g of a nonelectrolyte in 50.0 g of water. If the boiling point increases by 0.203 C, what is the molar mass of the solute? The boiling point elevation constant for water is .512 C/m.
For weak acid, HX, Ka = 1.0 10^-6. Calculate the pH of a 0.82 M solution of HX.
During the purification and recrystallization of a solid why can't you just remove the solvent by evaporation after filtering and decolorizing
Prepare 1.00L of a pH~12 buffer with a total phosphate concentration of 0.050 M.You have at your disposal the following compounds
The first-order rate constant for the decomposition of N2O5, 2N2O5 --> 4NO2 + O2 at 70 degrees C is 6.82 * 10 ^-3 . Suppose we start with 2.90×10?2 of in a volume of 1.7 L. A)
From the plots of the boiling point versus the volume of distillate in the simple distillation experiments, what can you conclude
What are the flight times of the singally and doubly-protonated ion forms of a 1735.4 Da peptide accelerated by a potential of 25.00 kV
Deficiency of phosphoglyceromutase d) mutation that interferes with the formation of quarternary structure in hemoglobin
Magnesium burns in oxygen gas to produce magnesium oxide. What mass of magnesium will react with a 0.25 L container of oxygen gas at 80oC and 770 mmHg?
Assume that O2(g) and H20(g) can be described by the van der Waals equation of state. Decide which between 1 mole of O2 and H20 has the highest pressure at the same value of T and V
How many grams of Na2CO3 are present in 29.7 mL of a 31.0% Na2CO3 solution. The density of the solution is 1.09 g/mL.
Describe how you would make 500 mL of 0.150 M Na2SO4 given 1 kg of Na2SO4, a distilled water supply, a balance, anf a 500-mL volumetric flask.
Which of the following factors increase the likelihood that a reaction will be spontaneous? 1. Energy is released in the form of heat. 2. A liquid is generated from a solid
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