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Calculate the nuclear binding energy per mole of nuclei of and the binding energy per mole of nucleons for 31P. The required masses (g/mol) are: 1 1H = 1.00783; 1 0n = 1.00867; 31 15P = 30.97376
The correct answer must be in the following format: 1.23E4 cal/mol(nuclei) and 4.56E7 cal/mol(nucleons)
If 1.26 L of H2 gas are formed at STP, how many gram of HCl reacted? The reaction is Zn(s) + 2HCl(aq) ( H2(g) + ZnCl2 (aq)
Calculate the molar concentration of CO2 for a sample that has a pH of 6.220 and a HCO -3 concentration of 0.0020 M. For carbonic acid pKa1=6.33 and pKa2=10.35.
calculate the approximate concentration of the solution in mol/kg and determine the volume change of the ballon when it ascends from 1 atm pressure to 240 torr pressure ?
a.) Can you be certain that the organic layer would from the upper layer? Eplain in details. b.) How could you test to determine which is the non aqueous layer? Explain in details.
a sample of air contains 78.08% nitrogen, 20.94% oxygen, .05%carbon dioxide and .930% argon by volume. How many molecules of each gas are present in 1 liter of the sample at 25 degrees celsius and 1 atmosphere?
The major isotopes of tungsten are 182W(26.32 %), 183W(14.31%0, 184W(30.67%), and 186W(28.62%) What is the atomic weight of W?
Rhodium has a density of 12.45 g/cm3. This metal crystallizes in a face-centered cubic unit cell. Calculate the diameter of a rhodium atom?
Atmospheric pressure decreases as altitude increases. In other words, there is more air pushing down on you at sea level, and there is less air pressure pushing down on you when you are on a mountain.
Write the chemical equation for all the reactions both SN1 and SN2 involving primary and secondary substrates b) Rank the primary halide in order of increasing reactivity toward SN2
Magnesium oxide reacts slowly with water to form magnesium hydroxide. What would be the effect on the observed value for ∆H_rxn for the reaction of MgO if 10%
it took 35.40mL of 0.100 M NaOH to titrate a 2.55 gram of a weak acid to the equivalence point. The pH when 17.7mL of the NaOH had been added was 6.2. What was the Ka for the acid
write a balanced chemical equation for the reduction of dl-camphor by NaBH4. Assume all H of NaBH4 are used in the reduction.
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