Question

what is a chemical formula?
a chemical formula is a symbolic representation of the types and number of atoms of each element present in a compound.
a chemical formula is a set of atoms present in a compound.
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part b
choose all the examples.
check all that apply.
iron
c₆h₁₂o₆
nacl
co₂
carbon oxide
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Explanation:

A chemical formula is a symbolic representation. It uses symbols (like \(C\) for carbon, \(H\) for hydrogen) and sub - scripts (numbers) to show the types and number of atoms. For example, in \(CO_2\), \(C\) is for carbon, \(O\) is for oxygen, and the sub - script \(2\) means there are two oxygen atoms. "Iron" is an element name, not a formula. "Carbon oxide" is a name, not a formula. \(C_6H_{12}O_6\), \(NaCl\), and \(CO_2\) use chemical symbols and sub - scripts to represent the composition of compounds.

Answer:

• First question: A chemical formula is a symbolic representation of the types and number of atoms of each element present in a compound.
• Second question: \(C_6H_{12}O_6\), \(NaCl\), \(CO_2\)