Aluminum foil on door knobs when we want to paint a door to avoid paint stains
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Aluminum foil Usage</h3>
Aluminium is an element of the periodic table with an atomic number 13.
Now, When painting alone, aluminum foil is used in wrapping doorknobs, and this practice is done to keep paint off.
The usage aluminum foil is an efficient way of keeping away paint from touching door knob
More on Elements
brainly.com/question/2143004
Answer:
because their ions are free to move from place to place.
Explanation: see answer
Answer:
B
Explanation:
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The only answer we can choose
<span>B.
energy needed to break chemical bonds.</span>
Answer:
The substance is a mixture
Explanation:
The question lets us know that when solvent X was used as the mobile phase, we obtained only one spot. This may deceive us into thinking that the substance is pure since a pure substance has only one spot on a chromatogram.
However, the same substance yields three spots with solvent Y. This shows that the unknown sample is a mixture of substances and solvent X was unable to fully separate the mixture.