plz help work is due today a mixture contains ethene, hydrogen and ammonia gas. Explain how a sample of hydrogen gas can be obtained from this mixture​

Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply. sodium fluoride, naf octane, c8h18 propanol, ch3ch2ch2oh potassium iodide, ki benzene, c6h6