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Furoic acid, HC5H3O3, has a Ka value of 6.76 10-4 at 25°C. Calculate the pH at 25°C for each of the following.
(a) a solution formed by adding 33.0 g of furoic acid and 28.0 g of sodium furoate, NaC5H3O3, to enough water to form 0.210 L of solution
(b) a solution formed by mixing 30.0 mL of 0.171 M HC5H3O3 and 15.0 mL of 0.26 M NaC5H3O3 and diluting the total volume to 135 mL
(c) a solution prepared by adding 51.0 mL of 1.63 M NaOH solution to 0.520 L of 0.0912 M HC5H3O3
what is the volume of a block with the dimensions 95.6cm in length, 43.7cm wide, and 10.2cm in height?
The addition of 6 g of salt to a sample of pure water causes its freezing point to be reduced from 0°C to -1.5°C. After an additional amount of salt is dissolved in the solution
Consider the following reaction: 2A + B → 3C + D If 63.0 mol A and 42.0 mol B react to form 54.0 mol C. What is the percent yield of this reaction.
an irregular shape of metal has a mass of 54.6 grams and displaces 2.83 cm^3 of water when dropped into a graduated cylinder filled with water. What is the identity of the pure metal?
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A solution of 0.264 M NaOH is used to neutralized 54.0 mL H3PO4 solutions. if 1.0 mL of NaOH is required to reach end point what is the molarity of H3PO4
A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.03 ft. What must be the standard deviation per 100 ft tape length to achieve the desired precision?
If desalinated water costs 2250 per acre-foot, how much does desalinated water cost per liter?
How do you do the problem- The pKa for lactic acid, CH3CH(OH)COOH, is 3.86. At physiological pH (7.40), which is the predominant form
Using the "like dissolves like" rule and the chemical structure of your unknown liquid, explain its solubility/insolubility in water. Describe the type of bonding that your unknown has (covalent, polar covalent)
Calculate the enthalpy change for the dissolution of NH 4 NO 3 and expree your answer in units of kJ/mol.
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