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A solution is made by dissolving 0.0100 mol of HF in enough water to make 1.00 L of solution. At 26 °C, the osmotic pressure of the solution is 0.311 atm. What is the percent ionization of this acid?
What is the longest wavelength (in nm) that can dissociate a molecule of H-I? in nm.
2.10 L of a buffer solution that is 0.360 M in NH3 and 0.430 M in NH4Cl are diluted to 4.30 L with distilled water. What is the pH of the buffer? Kb of NH3 = 1.8 10-5.
What is the pH (to nearest 0.01 pH unit) of a solution prepared by mixing 52.0 mL of 0.631 M HCl and 63.0 mL of 0.723 M NaOH
Explain which of the subsequent amino acids when presented in a polypeptide chain interrupts the alpha helical arrangement
What would be the activation energy for the reverse reaction in the presence of a catalyst that decreased the activation energy for the forward reaction to 107 kJ/molrxn
A solution is prepared by dissolving 0.2222 g of KIO3 in 50mL. Find the molarity and its uncertainty with an approximate number of significant figures
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4
2 NO(g) + O2(g) 2 NO2(g) In one experiment 0.633 mole of NO is mixed with 0.354 mole of O2. Calculate also the number of moles of NO2 produced.
a. what is the ph of a solution prepared by adding 20.0ml of 0.10macetic acid and 10.0ml of 0.10m sodium acetate?b.
1. who does the first ionizaiton energy of the alkali metal in a given period compare with the first ionization energy
Why is it necessary to remove the stopper from a reparatory funnel when liquid is being drained from it through the stopcock
a piece of matal with a specific heat capacity of 0.225 jg degrees c changes in temperature from 21.0 degrees c tp 51.0
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