The right answer is the first molecule (3-methyl-butan-2-one).
There are many bands around 2900-3000 cm-1 proving the presence de C-H bound.
There an intense band in 1700 cm-1 proving the presence of C=O.
There's no band proving the presence of aromatic structure, C=C bond nor C-N bond.
<span>Recrystallization
is another method of purification of solids in which an impure solid is
crystallize repeatedly to obtain amore pure solid and a larger one. Ethanol is
better suited as solvent in recrystallization of benzene than acetone because
it becomes soluble with benzene at a higher temperature. Ethanol is non polar
and may react well with benzyl but acetone are is non polar. A difference in
their polarity, especially in heating both benzyl and the solvent can lead to
more impurities that cannot be removed.</span>
Answer:
They were made in unstable conditions
Explanation: Im smarty pants
structural, plant and animal cells are very similar because they are both eukaryotic cells. they both contain membrane-bound organelle such as the nucleus, endoplasmic, mitochondria etc
Liquid - rain
Solid - snow
Gas - water vapour (when it evapourates from the lithosphere)
