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Write a clear, and complete answer to the following question. Your answer should be directed towards a first year Chemistry student. "What is the relationship 22.4 L/mol describe? What is assumed?"
if 1.500 g of solute that has a molar mass of 125.0 g were dissolved in 35.00 g of camphor, what would be the resulting freezing point of the solution?
an iron piston in a compressor has a mass of 3.62 kg. if the specific heat of iron is 0.449 jgdegc how much heat is
Claculate the percentage of manganese in the steel if the molar absorptivity of permanganate is 2235L/cm mol at this wavelength? The cell path length is 1.00cm.
Classify the reaction type : combination , combustion, decomposition , single displacement, or double-displacement
What is the binding energy for a beryllium-9 nucleus? What is the binding energy, , for a beryllium-9 nucleus in ? Recall that . 1mev=1.60 x 10^-14
Calculate a rough value of the concentration of OH- ion, [OH-], in the saturated solution.The approximate value of the Ksp for calcium hydroxide is 6.510?6
Elements in the first short period are limited by the octect rule whereas those in the higher period can expand their valence shells. Describe what this means, account for this phenomenon and give an example of each.
The metals in group 3A, 4A and 5A are not transition metals, however all but 1 has variable charges. What element in Group 3A, period 3 has a fixed charge, and what is that charge
Explain the octet rule and the duet rule in terms of orbitals. It will be helpful for you to draw out the electron configurations for a few of these elements and examine them.
calculate the change in the entropy of the universe between the time that the contents of the glass enter the lake and when thermal equilibrium is subsequently restored. State any approximations made in your calculation.
If I have 2 mM of pyrene in decane, how do I make 10 uM, 0.5 mM, 1.0 mM, and 1.5 mM solutions using the density of decane (0.73 g/mL)
Calculate the rms (average) speed of PH3 atoms or molecules at 123 oC. Use R = 8.314 kg-m2/K-s2-mol for the value of the gas constant. The average speed of a PH3 atom/molecule at 123 oC is 539 m/s.
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