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What volume of .01M HCL must be added to 20 ml of .04M phosphate buffer, pH 6.50, to reduce the pH to 5.5. pK of phosphate buffer is 7.20
using henderson hasselbalch calculate the ph of .5 L of 2.0M solution of nitrous acid, HNO2 that also contains 140g of nano2 (MM=70g/mol)
What is the decay constant for iodine-131? It decays by beta emission with a half-life of 8.04 days.
a v 535 ml at 1.00 atm. what is the volume at 675 torr?b v 2.07 l at 110.9 kpa. what is the volume at 0.992 atm?c v
In the emission spectrum of helium, there are strong lines at wavelengths of 447.1 nm, 501.6 nm, and 587.6 nm. Using the Balmer-Rydberg equation, determine the values of nf for each emission.
Two readings (initial volume and final volume) are required to deliver a specified volume of titrant. For a delivered volume of 6.25 mL, compute the uncertainty in the volume of titrant delivered.
How much heat energy is needed to raise the temperature of 2.01 Kg of this oil from 23 C to 191 C?
A certain reaction has Delta H= -19.5 kJ and delta S= +42.7kJ. Caculate Delta G for the reaction at 25 degrees C. Is the reaction spontaneous at 25C
step by step Mechanism for the reaction of butanal with methanol under acid catalyzed conditions?
If we define the quantum yield as ? = d[A2]/dt / Ia , develop an expression for the quantum yield of the reaction. e) If the fluorescence is minimal (k3 = 0), what would be the value of
Discuss the general procedure on how solvents affect the rate of alkyl chloride hydrolysis. Include the data that need to be collected
explain what would happen if you failed to achieve complete precipitation of the Lead in procedure 2(separation of silver and Lead ii ions as chlorides), Explain how this might impact your results
silver chlorideagcl often used in silver plating contains 75.27 of silver. compute the mass of agcl essential to plate
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