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An acid HA has Ka = 2.28 x 10 -4. The % ionisation of this acid in a 0.170 M solution of the acid in water is closest to?
Calculate the pH for the soluton after addition of solid sodium formate to cause the formate ion (CHOO-) to increase to 0.2 M
Calculate the number of grams of H2 formed If the wet Hydrogen gas formed occupies a volume of 9.67 Litres
100 ml of 1 M acetic acid (pKa 4.76) are placed in a flask. The following volumes of 1 M KOH are added, and the total volume is adjusted to one liter with water.
What is the maximum work that can be obtained from a 340 L tank of compressed air at 4350 PSI
The molecule ethanol (CH3CH2-OH) is very soluble in water. What intermolecular attraction is responsible for its solubility
Calculate the amount of vitamin C in mg that are titrated by one milliliter of the 0.05N iodine solution.
The concentration of sugar (glucose, C6H12O6) in human blood ranges from about 80 mg/100 mL before meals to 120 mg/100 mL after eating.
How many grams of NO2 will be produced when 2.0 L of nitrogen at 840mmHg and 24 C are completely reacted N2+2 O2-----2 NO2 How exactly do you calculate this
Assume a 95% yield for the formation of the phosphonium ion, how many milligrams of benzyl chloride and triphenyl phosphine would you need to prepare 220 mg of benzyltriphenylphosphonium chloride?
What is the balanced equation for the synthesis of Acetylsalic acid (Aspirin) from Methyl salicylate?
A 1.0 ounce piece of chocolate contains 15mg of caffeine, and a 6.0 ounce cup of regular coffee contains 105mg of caffeine. How much chocolate would you have to consume to get as much caffeine as you would from 2.0 cups of coffee.
The solutions start out at 22.50 deg C, and the final temperature after reaction is 24.28 deg C. The densities of the solutions are all 1.00 g/mL, and the specific heat of the mixture is 4.2 J/g deg C . What is the enthalpy change for the neutrali..
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