Question

chemical reactions quick check
which of the following molecules shows two atoms of hydrogen (h)? (1 point)
○ 2ch₄
○ h₂so₄
○ ho₂
○ 2h₂o

Explanation:

Step1: Analyze $2CH_4$

The sub - script of $H$ in $CH_4$ is 4, and with the coefficient 2, the number of $H$ atoms is $2\times4 = 8$.

Step2: Analyze $H_2SO_4$

The sub - script of $H$ is 2, so it has 2 hydrogen atoms.

Step3: Analyze $HO_2$

The sub - script of $H$ is 1, so it has 1 hydrogen atom.

Step4: Analyze $2H_2O$

The sub - script of $H$ in $H_2O$ is 2, and with the coefficient 2, the number of $H$ atoms is $2\times2=4$.

Answer:

$H_2SO_4$