<span>The burners must be turned off because, in the case of liquid chromatography, the eluant solvents being used are flammable. Leaving the burners lit could cause the eluant to catch on fire, putting the scientist at risk.</span>
Hello there.
<span>Which valence have the greatest tendency to form ions?
</span><span>F. -3
</span>
A ) Would be the correct answer!
-Hope this helps you:))
The answer is Energy cannot be created nor destroyed.
