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Problem- A 25ml sample of .15M hydrazoic acid is titrated with .15M of NaOH solution. What is the pH at the equivalence point?Ka of hydrazoic acid is 4.5*10-4.
Solve the above problem and provide steps with explanation
the heat of reaction for the combustion of cyclobutane c4h8 is 650.3 kcalmol. what is the heat of combustion for
For your cereal sample, you added the same volume of sodium acetate that you added to your standards and solution unknown. b) You forgot to add hydroxylamine hydrochloride when you prepared the standards
A gas sample has an original volume of 680 ml when collected at 720 mm and 28°C. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C
How many moles of NaF must be dissolved in 1.00 liter of a saturated solution of PbF2 at 25 °C to reduce the Pb2+ to 1 x 10-6 molar?
A student does a mini-titration with an unknown acid by adding 13 drops of 2M NaOH to 9 drops of the unknown solution. What is the concentration of the unknown acid
A 9.15-L container holds a mixture of two gases at 37 °C. The partial pressures of gas A and gas B, respectively, are 0.443 atm and 0.707 atm. If 0.150 mol a third gas is added with no change in volume or temperature, what will the total pressure ..
If 0.50 mole H2 and 1.0 mole He are compared at standard temperature and pressure, the two gases will: a. have equal effusion rate
What region of the electromagentic spectrum does this belong to, the frequency of this energy and the energy in J/photon and kJ/mole?
Plot the radial functions for the 2s and 2p orbitals to explain how shielding plays into the relative energy of 2p electrons to 2s in a multi electron system. What is the relative energy in a hydrogenic (1 electron) system.
The ReO3 structure is cubic with Re at each corner of the unit cell and one O atom on each unit cell edge midway between the Re atoms. Define this unit cell and determine
The minimum frequency of light required to eject electrons from a metal is called the threshold frequency? Determine the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.55 × 1014 s-1.
Hexane has a density
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