Question

The molecular formula for hydrogen sulfide is h2s. what does the formula indicate about the composition of a 1.0-gram sample of hydrogen sulfide? many different molecules make up hydrogen sulfide, but all have a 2-to-1 ratio of hydrogen to sulfur atoms

Answer 1

In a 1.0-gram sample of hydrogen sulfide (H2S), each molecule comprises two hydrogen atoms and one sulfur atom, maintaining a 2:1 hydrogen-to-sulfur atom ratio.

Step-by-step explanation:

The molecular formula H2S for hydrogen sulfide indicates that each molecule of hydrogen sulfide consists of two hydrogen atoms and one sulfur atom. In a 1.0-gram sample of hydrogen sulfide, all molecules have this same 2-to-1 ratio of hydrogen to sulfur atoms. By knowing the mass and molar mass of each element, we can calculate the number of moles in a sample, which can then reveal the number of molecules according to Avogadro's number. All molecules will maintain this consistent stoichiometric relationship, so in any given sample of hydrogen sulfide, regardless of mass, the ratio of hydrogen to sulfur atoms will always be 2:1.