So, the short answer is: burning is irreversible because it involves a chemical reaction, while melting is reversible because it's just a phase change.
Answer:
a
a
b
a
b
Explanation:
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<span>The group 16 element which combines with hydrogen to form a compound that has the strongest hydrogen bonding between its moleculen is is oxygen. This fact can be observed from the boiling points of the hydrides of the elements of group 16. For instance, the boiling point of hydrogen sulphide is - 60 degree celcius,that of hydrogen selenide is - 41.2 degree celcius, hydrogen telluride boiling point is - 2.2 degree celcius while that of water is 100 degree celcius. These bioiling points proof that the intermolecular hydrogen bond between the molecules of hydrogen and oxygen are the strongest.</span>
The sun: heats land more quickly than water, creates wind by unevenly heating the earth.
- creates wind by unevenly heating the earth
- heats land more quickly than water
<u>Explanation:</u>
Land surfaces assimilate substantially more sunlight based radiation than water. Water reflects most sun based radiation that arrives at its surface back to the climate. Since land ingests increasingly sun oriented radiation the land surface holds more warmth as do the vegetation for vitality. Subsequently, land surfaces warm more rapidly than water.
Also, we can say that the reason for the breeze is the lopsided warming of the Earth's surface by the Sun. The Earth's surface is made of various land and water zones, and these fluctuating surfaces assimilate and mirror the Sun's beams unevenly. This is exacerbated by the Earth's tilt. Since the focal point of the Earth gets more daylight, it is reliably more sultry than different pieces of the Earth.
The structure of CF2Br2 has 2 structures total because there is one isomer of the molecule.
F F
l l
F---C---Br and Br---C---Br with 6 e- on each of the outer species
l l
Br F