Question

molecules with hydrogen bonds (ch(_3))(_3)n c(_2)h(_5)oh ch(_3)nh(_2) hi ch(_3)cooh ch(_4) hf

Explanation:

Step1: Recall hydrogen - bond criteria

Hydrogen bonds form when H is bonded to N, O, or F.

Step2: Analyze $(CH_3)_3N$

N has no H directly bonded, no hydrogen - bond.

Step3: Analyze $C_2H_5OH$

O - H bond exists, can form hydrogen - bond.

Step4: Analyze $CH_3NH_2$

N - H bonds exist, can form hydrogen - bond.

Step5: Analyze $HI$

I is not N, O, or F, no hydrogen - bond.

Step6: Analyze $CH_3COOH$

O - H in carboxyl group, can form hydrogen - bond.

Step7: Analyze $CH_4$

No N, O, or F, no hydrogen - bond.

Step8: Analyze $HF$

F - H bond exists, can form hydrogen - bond.

Answer:

$C_2H_5OH$, $CH_3NH_2$, $CH_3COOH$, $HF$