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assuming that Ka is 1.85X10e-5 for acetic acid, calcualte the pH at one-half the equivalence pont and at the equivalence point for a titration of 50 mL of 0.100M acetic acid with 0.100M NaOH
When runners or other athletes practice at high altitudes pressure is reduced. What then will be the effect on the [O2] in their blood? Why does this produce a lightheaded feeling?
a 27.7 ml sample of CO2 was collected over water at 25.0 degrees celcius and 1.00 atm.(the vapor pressure of water at 25.0 degrees celcius is 23.8 torr) What will the volume be at the same temperature and pressure after removing the water vapor?
What is the concentration of iron(III) ion in a solution made by taking 10.00 mL of a 0.300 M Fe3+ solution and diluting it to the mark in a 100.0 mL volumetric flask?
Calculate the rate at each time interval & average rate for the reaction and determine the rate of each time interval, and then calculate the average rate for the reaction in terms of [H 2 O].
The specific heat of liquid water is 4.184 J/g x C. Calculate the energy required to heat 10.0 g of water from 26.5 C to 83.7 C.
Compute the number of moles of H2O will be formed from the reaction 75.1g benzene?
how many grams of Na2CO3 (FM 105.99) should be mixed with 5.00 g of NaHCO3 (FM 84.01) to produce 100ml of buffer with pH 10.00.
The pressures ranges between 0.2 bar and 60 bar. Determine the net work produced and the efficiency of the cycle?
What is the activation energy for the uncatalyzed reverse reaction?
The rate law for a hypothetical reaction is rate=k[A]2 When the concentration is 0.10 moles/liter, the rate is 2.7 * 10-5 moles/liter second. What is the value of k?
The resultant mixture is then evaporated in a kettle to produce a jam contain- ing 67 wt % soluble solids
The density of lead is 11.3 g/ml. The water level in a graduated cylinder initially at 220mL rises to 297mL after a piece of lead is submerged. What is the mass in grams of the lead?
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