Answer:
The purpose or objective of the electromagnetic spectrum experiment the purpose is to figure out what elements are in the planets’ and the moons’ atmospheres by looking at their absorption spectrums
Explanation:
What is electromagnetic spectrum?
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.
The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from below one hertz to above 10^25 hertz, corresponding to wavelengths from thousands of kilometers down to a fraction of the size of an atomic nucleus. This frequency range is divided into separate bands, and the electromagnetic waves within each frequency band are called by different names; beginning at the low frequency (long wavelength) end of the spectrum these are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays at the high frequency (short wavelength) end.
The electromagnetic waves in each of these bands have different characteristics, such as how they are produced, how they interact with matter, and their practical applications.
The limit for long wavelengths is the size of the universe itself.
5 sig figs
Trailing zeroes always count as a sig fig if there is a decimal point
Answer:
The Born Haber cycles is an adaption of Hess’s law to calculate lattice enthalpy from other data
The lattice enthalpy cannot be determined directly. We calculate it indirectly by making use of changes
for which data are available and link them together in an enthalpy cycle the Born Haber cycle
Enthalpy of lattice formation
The Enthalpy of lattice formation is the standard enthalpy
change when 1 mole of an ionic crystal lattice is formed
from its constituent ions in gaseous form. Na+
(g) + Cl- (g) NaCl (s) [Latt H = -787 kJ mol-1
]
Enthalpy of lattice dissociation
The Enthalpy of lattice dissociation is the standard enthalpy
change when 1 mole of an ionic crystal lattice form is
separated into its constituent ions in gaseous form.
NaCl (s) Na+
(g) + Cl- (g) [Latt H = +787 kJ mol-1
]
Generally Lattice Enthalpy refers to the enthalpy change when a lattice is made from gaseous ions.
Some exam boards refer to the opposite process at tim
Explanation: