Question

chemical formulas- part 1 atoms, elements, & compounds chemical formulas number of elements and atoms in a compound question 1 of 10 which chemical formula represents the compound shown? h₂o ch₄ h₂o₂ c₂h₄

Explanation:

Step1: Identify elements in the molecule

The molecule has 2 hydrogen (H) atoms and 2 oxygen (O) atoms.

Step2: Match with chemical formulas

$H_2O$ has 2 H and 1 O, $CH_4$ has 1 C and 4 H, $H_2O_2$ has 2 H and 2 O, $C_2H_4$ has 2 C and 4 H. So the correct formula is $H_2O_2$.

Answer:

$H_2O_2$