Answer:
In paper chromatography, the wet moving edge of the solvent that progresses along the surface where the separation of the mixture is occurring.
Explanation:
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Answer is Scandium hope this helps!
Answer:
El color de la llama se debe a que los átomos del metal absorben energía de la llama; dicha energía se transforma en luz cuando el átomo vuelve a su estado normal. Los agentes productores del color se usan en forma de sales y raramente como metales en polvo
Explanation:
Molarity = mol/L
(0.5M) = (2mol)/L
(2mol)/(0.5M) = L
4 liters
Nitrogen is a gas because it is an airlike fluid substance which expands freely to fill any space available, irrespective of it's quantity
