The most common way for electrons to move to an excited state is by absorption of electromagnetic radiation. When an electron absorbs this radiation, it takes in the energy that the wave contains and this causes it to move to a higher energy state. They come back to ground state at the first possible opportunity because in the excited state they have lots of potential energy. Electrons can make different jumps in energy levels when it loses this potential energy (ie. it can go directly to the ground state, or it can go to lower energy levels and then the ground state). When they move to lower energy levels, the electrons emit the electromagnetic radiation that was absorbed - the frequency of the waves emitted depends on the electron's jumps between energy levels as it returns to ground state.
Answer:
Just under 1 tsp
Explanation:
This is a situation where dimensional analysis is helpful....
156 mg / (80 mg / 2.5 ml * 5 ml / tsp ) =
156 mg / ( 160 mg/tsp) = .975 tsp ~~~ 1 tsp
Answer:
120 V usually but its not given in the option so 110 V
a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
Answer:
the volume of sea water is 85866.407 L, necessary to extract 8.0 E4 tons of Mg
Explanation:
- %p/p = 1.3 g Mg / 1000g seawater ) * 100 = 0.13 %
⇒ 8.0 E4 ton Mg * ( 0.00110231 Kg / ton ) = 88.1848 Kg Mg
⇒ 0.13 % = ( 88.1848 Kg Mg / Kg seawater ) * 100
⇒ ( 0.13 / 100 ) = 88.1848 / Kg seawater
⇒ Kg seawater = 88.1848 / 1 E-3
⇒ Kg seawater = 88184.8 Kg
⇒ Vseawater = mass seawater / density seawater
∴ density seawater = 1027 Kg / m³...from literature
⇒ V seawater = 88184.8 Kg / 1027 Kg/m³
⇒ V seawater = 85.866 m³ * ( 1000L / m³ )
⇒ V seawater = 85866.407 L