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Use data from Table 7.2 in the textbook to calculate the volume of butane,C4H10, measured at 16.3 Celsius and 749 mmHg, that must be burned to liberate 9.00×104 J.
What is the pH change of a 0.300 M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.140 M with no change in volume?
following hybridization these 4 unpaired electrons can form covalent bonds. In order to promote an s electron to an empty p orbital, energy is required. Is it energetically favourable to promote this electron when bonding? Why or why not
A 6.5g sample of diprotic acid requires 137.5mL of a .75M NaOH solution for complete neutralization. Determine the molar mass of the acid.
This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generating H2 is desired. How many grams of CaH2 are needed to generate 143L of H2 gas if the pressure of H2 is 823torr at 21de..
In the simulation, set the temperature of the sample gas to 304 . Click on the "Run" button and observe how the number of moles of the gas varies with an increase in the gas's volume
when 2-propanol was used as the developing solvent, two substances moved with the solvent front (rf=1) during tlc analysis on a silica gel plate. can you conclude that they are identical? if not, what additional experiments would you perform
If a sample is composed of 39% of the lighter isotope (with the balance being 7Li), calculate the average molar mass of the sample.
Which of these given nutrients is likely to limit production if the light supply is adequate and there is no nitrogen fixation?
a solution is made to be 3.8 10-2 m in al3 and .29 m in naf. if the kf for alf63 is 7 1019 how much aluminum ion
a sample of tap water consists of water fluoride ions calcium ions and several other dissolved ions. the ions are
1.write down the electron configuration of the b ion using the noble gas core notation?2.what you will expect for the
Briefly discuss how the solubility, crystallization and extraction techniques aid one in separation of the components of "Panacetin".
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