Hydrogen may have some isotopes.Logical formLearned from6 sentences. A (hydrogen gas) can be sulphuretted.Logical formLearned from6 sentences. A hydrogen can be separated.Logical formLearned from6 sentences. Some drums can be constituted-of-or-filled-with (hydrogen peroxide).Logical formLearned from6 sentences. A principle can be behind a (hydrogen bomb).Logical formLearned from6 sentences. (Hydrogen gas) may be extracted from water.Logical formLearned from6 sentences. Hydrogen may become a fuel.Logical formLearned from6 sentences. The atmosphere of a planet may consist of hydrogen.Logical formLearned from6 sentences. Cosmic rays may strike hydrogen.Logical formLearned from6 sentences. A (carbon atom) may be bounded to some (hydrogen atoms).Logical formLearned from6 sentences. Signs can be constituted-of-or-filled-with hydrogen.Logical formLearned from6 sentences. Others may eat hydrogen.Logical formLearned from6 sentences. Hydrogen may be freed.Logical formLearned from6 sentences. Microbes may combine a hydrogen with (carbon dioxide).Logical formLearned from6 sentences. A reserve can be constituted-of-or-filled-with (hydrogen fuel).Logical formLearned from6 sentences.