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Question- A 25.0 mL sample of 0.150 M butanoic acid is titrated with a 0.150M NaOH solution. What is the pH at the equivalence point? The Ka of butanoic acid is 1.5 x10-5
Express your answer using two significant figures.
What is the volume of one mole of hydrogen gas at 273 K and 760 torr? What is the volume of one mole of oxygen gas under the same conditions?
Describe the preparation of 125 mL of 5.30 M HNO3 from a concentrated solution that has a specific gravity 1.42 and is 70% (w/w) HNO3.
NH3 is a weak base (Kb=1.8 x 10^-5) and so the salt NH4Cl acts as a weak acid. What is the PH of a solution that is 0.039 M in NH4Cl?
The pressure in an oxygen tank stored at 0°C is 10.0 atm. What pressure will develop in the tank if it is heated in a fire to 500°C?
a 0.21 m3 drum contains 100 l of a mixture of several degreasing solvents in water. the concentration of
Calculate the number of grams of propane (C3H8) required to heat all of the water in a 50-gallon hot-water tank from 23.4 degrees C to 65.0 degrees C
Calculate the molar mass that would be obtained from the actual experimental data under the following conditions. The unknown is methyl propyl ether (CH3OC3H7)
what would be the approximate freezing point of 0.1 molar aqueous solution of aluminium chloride at room temperature
The orbital energy of any atomic species depends on factors other than the principle quantum number n and any given energy level in H is more stable than the same level in H+.
How many Joules are required to heat 2 L of water in a pot from 20 degree C to the boiling point of water? The specific heat of water is 4.18 J/g. Degree C and the density of water is 1 g/mL
The density of concentrated hydrochloric acid is 1.19 g/mL and 37.5% HCl by weight. Describe how you would prepare 500mL of a 0.25M solution of HCl.
The metal used to make the US nickel coin is an alloy of 75% copper and 25% nickel. What maximum mass of alloy could be produced if only 450 kg of nickel and 1180 kg of copper were on hand?
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