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which of the following substances is a compound.
a.sodium chloride
b.iron
c.hydrogen
d.oxygen​


Sagot :

Answer:

a. sodium chloride

Explanation:

it is a compound since it consists of two elements: sodium and chlorine

Answer:

A. Sodium Chloride

Explanation:

Ordinary table salt is called sodium chloride. It is considered a substance because it has a uniform and definite composition. All samples of sodium chloride are chemically identical.Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary.