I predict that there will be an increase in the seconds recorded in the time column. This is because, as more water is mixed with sodium thiosulfate, its concentration diminishes in each flask. Additionally, a lower concentration results in a slower reaction rate since fewer molecules of sodium thiosulfate means there are less frequent collisions with sulfuric acid. With fewer collisions occurring in the reaction, it takes a longer time for the reaction to complete, leading to increased time when sodium thiosulfate is diluted.
Explanation:
I can confirm that this explanation is accurate.
The maximum wavelength of light required to break the amide bond is 268 nm. First, we find the average bond energy, then use Avogadro's number to figure out the energy needed for one molecule. Finally, applying the relationship between energy and wavelength, we can conclude the value of the wavelength.
The result is: 16.56 kJ.
1) The mass of NH₄Cl is 5.35g.
For water, m(H₂O) = density(H₂O) · volume(H₂O) = 1g/cm³ · 100cm³ = 100g.
The temperature change, ΔT, is 25.55°C - 21.79°C = 3.76°C.
Calculating heat, Q = m(solution) · C(specific heat of water) · ΔT.
This gives Q = 105.35g · 4.18 J/g·°C · 3.76°C = 1655.76J.
2) Here, m(NH₄Cl) = 1mol · 53.5g/mol = 53.5g.
For water again, m(H₂O) = density(H₂O) · volume(H₂O) = 1g/cm³ · 1000cm³ = 1000g.
Thus, m(solution) totals 1053.5g, which is ten times the mass of the first solution.
Now, Q = 10 · 1655.76J = 16557.6J = 16.56 kJ.
