Are you sure it isn’t SO3+H2O = H2SO4 because that would be combination (synthesis) A+ B=AB
Or SO3 + H2SO4 = H2S2O7
Because that would also be synthesis
Answer:
B. They are dimensionless ratios of the actual concentration or pressure divided by standard state concentration, which is 1 M for solutions and 1 bar for gases.
Explanation:
Activity of a substance is defined as the ratio of an effective concentration or an effective pressure to a standard state pressure or a standard state pressure. It is usually a unit less ratio.
Concentrations in an equilibrium constant are really dimensionless ratios of actual concentrations divided by standard state concentrations. Since standard states are 1 M for solutes, 1 bar for gases, and pure substances for solids and liquids, these are the units to be used.
Hence, activity is a fudge factor to ideal solutions that correct the true concentration. Activity of a gas and solute concentration is a ratio with no unit.
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Answer:
vague symptoms are characteristic of an acute toxin, because of the of the lack of well defined consistency that these symptoms have in relation to the course of the disease progress.
The correct answer is:
The longest wavelength photon is n = 5 to n = 4.
The explanation:
According to he relation between the wavelength and energy, there have inverse relationship. The longest wavelength has the lowest energy.
and when:
-Transitions to n=1 are in the UV part of the spectrum and have the shortest wavelengths.
-and Transitions to n=2 are in the visible part of the spectrum and have wavelengths between 700nm and around 400 nm
-and Transitions to n=3 or greater are in the infra-red part of the spectrum and have the longest wavelengths.
- So the longest wavelength would correspond to the lowest energy and that would correspond to the difference in energy between n=5 and n=4
