Question

a molecular formula may be written as an empirical formula when the ratio of atoms can be factored to give the ____________ of atoms present in the compound. simplest ratio actual number sum of the number product of the number question 8 1 pts which of the following molecular formula can simplified to give an empirical formula? (pick all that apply) c6h6 c6h12o6 c3h8o ch2o c2h4o2

Explanation:

An empirical formula represents the simplest whole - number ratio of atoms in a compound. For the first question, this is the key concept. For the second question, we find the greatest common divisor of the sub - scripts of each element in the molecular formula to simplify it to an empirical formula.

• For $C_6H_6$, the ratio of $C$ to $H$ is $6:6$, and the simplest ratio is $1:1$, so empirical formula is $CH$.
• For $C_6H_{12}O_6$, the ratio of $C:H:O$ is $6:12:6$, and the simplest ratio is $1:2:1$, so empirical formula is $CH_2O$.
• For $C_3H_8O$, the sub - scripts 3, 8, and 1 have no common divisor other than 1, so it is already in empirical form.
• For $CH_2O$, it is already in empirical form.
• For $C_2H_4O_2$, the ratio of $C:H:O$ is $2:4:2$, and the simplest ratio is $1:2:1$, so empirical formula is $CH_2O$.

Answer:

Question 1: A. simplest ratio
Question 2: A. $C_6H_6$, B. $C_6H_{12}O_6$, E. $C_2H_4O_2$