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.
carbon oxide
iron
nacl
co₂
c₅h₁₂o₆

Explanation:

A chemical formula is a symbolic representation. For example, \(NaCl\) shows one sodium (\(Na\)) and one chlorine (\(Cl\)) atom. \(CO_2\) has one carbon (\(C\)) and two oxygen (\(O\)) atoms. \(C_6H_{12}O_6\) has six carbon (\(C\)), twelve hydrogen (\(H\)), and six oxygen (\(O\)) atoms. "Carbon oxide" is a name, not a formula. "Iron" is an element symbol (\(Fe\)), not a formula for a compound (as formula here refers to compound formulas).

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: \(NaCl\), \(CO_2\), \(C_6H_{12}O_6\)