Please explain the each statements given below... The disadvantage of partition chromatography are: 1. The high volume of the mobile phase is sometimes required for separation. 2. Data cannot be stored long in certain types of partition chromatography. 3. Automation has made it more difficult and costly. 4. In gas-liquid chromatography, only volatile compounds can be separated. 5. It is possible to separate only soluble analytes of sample. Please SOON HELP ME

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explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

the objects have the same charge.

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