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What drugs are concerned Depressants and what effects do they have on the user?
The normal boiling point of water (delta H vap = 40.7 kJ/mol) is 100c. At the summit of mount Everest the boiling point of water is 70 c. Calculate the pressure in (torr) at the summit of Mount Ev.
What is the significance of copper cycle? what type of changes take place?
A test for vitamin C (ascorbic acid, C6H8O6) is based on the reaction of the vitamin with iodine: C6H8O6(aq) + I2(aq) ? C6H6O6(aq) + HI(aq) (a) A 25.0 mL sample of juice requires 11.8 mL of a 0.0164 M I2 solution for reaction
calculate the volume of 0.050M Barium Hydroxide solution that contains the same number of moles
A typical absorption due to stretching of the C=O bond is 1750 cm-1. (5.25 x 10 ^13 s-1). What is the force constant for the stretching vibration?
Why are the project scope statement and WBS inputs of plan procurement?
What are the boiling point and freezing point of a 2.58 m solution of naphthalene in benzene. (The boiling point and freezing point of benzene are 80.1°C and 5.5°C, respectively.) boiling point °C freezing point °C
A flask contains only H2 at 59.2 atm and I2 (g) at 118. atm. The contents are then allowed to come to equilibrium according to the equation H2 (g) + I2 (g) 2HI (g) , Kp = 50.5
When 50.0 mL of water containing 0.50 mol HCl at 22.5°C is mixed with 50.0mL of water containing 0.50 mol NaOH at 22.5°C in a calorimeter, the temperature of the solution increases.
The student then pipets exactly 3.10 mL of the solution into a 100 mL volumetric flask and dilutes to the line with FeCl3 solution. What is the ASA concentration of the final solution?
Can the five percent approximation be applied in determining the pH of the following solutions? Yes No 8.07×10-3 M dihydrogen citrate ion Yes No 7.51×10-5 M chlorous acid Yes No 4.38×10-2 M carbonic acid Yes No 1.44×10-2 M hydrocyanic acid
A certain weak acid, HA , has a Ka value of 6.6×10?7. Calculate the percent ionization of HA in a 0.10 M solution. Calculate the percent ionization of HA in a 0.010 M solution.
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