Different wavelengths are involved.
Explanation:
When magnesium ignites with a bright white flame, it indicates that various wavelengths are related to the electron transitions occurring in the magnesium atom.
- Upon combustion, the electrons within the atom become excited.
- They emit characteristic light that corresponds to their energy levels.
- White light consists of a mix of different wavelengths.
- Seeing white light implies that multiple wavelengths combined are responsible for the observed emission.
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Spectrum
The energy needed to vaporize 1.5 kg of aluminum amounts to 16.345 GJ. The heat of vaporization for aluminum is given as ΔHvap = 294000 kJ/mol. The mass of aluminum in this case equals 1.5 kg which converts to 1500 g. We can calculate the number of moles of aluminum using the formula: Mass of aluminum/(Molar Mass of aluminum). The Molar Mass of aluminum stands at 26.98 g/mol. Using this information, Number of moles calculates to 1500/26.98, which equals 55.6 moles. The total energy required can be expressed as the product of the heat of vaporization and the number of moles of aluminum, so the energy required calculates to 294000 × 55.6, resulting in 16345441.0675 kJ or approximately 16.345 GJ.
FeCl₃ reacts frequently with phenolic compounds.
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