Compounds may contain hydrogen.Logical formLearned from5 sentences. A mixture can be constituted-of-or-filled-with (hydrogen sulfide).Logical formLearned from5 sentences. Hydrogen may undergo an (emission spectrum).Logical formLearned from5 sentences. A hydrogen can be at a core.Logical formLearned from5 sentences. A hydrogen can be attached.Logical formLearned from5 sentences. (Hydrogen bombs) can be true.Logical formLearned from5 sentences. A (hydrogen bomb) may be exploded.Logical formLearned from5 sentences. Hydrogen may undergo (spin isomers).Logical formLearned from5 sentences. An active ingredient can be (hydrogen peroxide).Logical formLearned from5 sentences. Some hydrogen may be produced.Logical formLearned from5 sentences. (Hydrogen bonds) may be formed.Logical formLearned from5 sentences. A (hydrogen bomb) may be tested.Logical formLearned from5 sentences. (Hydrogen fluoride) may undergo a solution.Logical formLearned from5 sentences. (Hydrogen fluoride) can be in water.Logical formLearned from5 sentences. (Hydrogen ions) may undergo a production.Logical formLearned from5 sentences.