I would say d. average of the mass number and the atomic number for the element.
<span>The representative particle for silicon is atom of silicon.
</span>Representative particles can be atoms, molecules, formula units or ions. Representative particles depend on the nature of the substance. Silicon is chemical element made of atoms.
For sodium chloride (NaCl) for example, representative particles are ions.
<span>Answer: an element and a compound.
An element is a pure substance formed by one kind of atoms (element).
A compound is a pure substance formed by several types of atoms(elements) that are connected by chemical bonds.
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Answer:
Ethanol is soluble in water because it has a hydroxyl group which allows it to form hydrogen bonds with the water molecules. This is why hexanol is not soluble in water.
B because machined make work 2x more work or higher
