two substances can be composed of the same chemical elements and still be different. the molecules…

two substances can be composed of the same chemical elements and still be different. the molecules represented below are all composed of carbon and hydrogen. but each kind of molecule makes up a different substance. these substances are different because their molecules have different numbers of carbon atoms and hydrogen atoms. first, select the model of a molecule composed of two carbon atoms and four hydrogen atoms. h c methane ethane ethene next, select the chemical formula for the substance composed of these molecules. c₂h₄ c₂h₆ ch₄ submit

two substances can be composed of the same chemical elements and still be different. the molecules represented below are all composed of carbon and hydrogen. but each kind of molecule makes up a different substance. these substances are different because their molecules have different numbers of carbon atoms and hydrogen atoms. first, select the model of a molecule composed of two carbon atoms and four hydrogen atoms. h c methane ethane ethene next, select the chemical formula for the substance composed of these molecules. c₂h₄ c₂h₆ ch₄ submit

Answer

Explanation:

Step1: Identify the correct molecule

The molecule with two carbon atoms and four hydrogen atoms is ethene. Methane has one carbon and four hydrogens ($CH_4$), ethane has two carbons and six hydrogens ($C_2H_6$), and ethene has two carbons and four hydrogens ($C_2H_4$).

Step2: Select the chemical formula

The chemical formula for a molecule with two carbon atoms and four hydrogen atoms is $C_2H_4$.

Answer:

$C_2H_4$