Question

question 4 of 22
complete each statement with the correct term.
blank shows lowest whole number ratio of atoms of each element found in a compound
blank shows the number of atoms of each element found in one molecule of the compound
the formulas could be either molecular or empirical formulas; however, some can only be molecular formulas.
which of the formulas must be molecular formulas?
□ ch
□ c₄h₅n₂o
□ c₂h₄o₂
□ no₂
□ c₈h₁₀n₄o₂

Explanation:

An empirical formula shows the lowest whole - number ratio of atoms of each element in a compound. A molecular formula shows the actual number of atoms of each element in one molecule of the compound. If a formula cannot be simplified to a lower whole - number ratio of atoms, it could be a molecular formula. $CH$ can be a empirical formula as it can be part of a larger molecule with a multiple of these atom ratios. $C_4H_5N_2O$, $C_2H_4O_2$, $NO_2$ can be simplified to lower whole - number ratios ($C_4H_5N_2O$ is already in simplest non - divisible form for these elements, $C_2H_4O_2$ can be simplified to $CH_2O$, $NO_2$ is simplest for nitrogen and oxygen). $C_8H_{10}N_4O_2$ is a complex formula that is likely a molecular formula as it represents a specific molecule and cannot be further simplified in terms of whole - number ratios of these elements in a meaningful way for a common compound.

Answer:

$C_4H_5N_2O$, $C_8H_{10}N_4O_2$