Methane is the unidentified gas since its molar mass is 16 g/mol.
When describing atomic masses and molecular masses, the Dalton (Da) or unified atomic mass unit (u) are two alternative units of mass that are frequently employed. It is known to be 1/12 the mass of a carbon-12 atom and is also referred to as "amu" in older.
We must be aware that a gas's molar mass directly relates to how long it takes to diffuse.
t1/t2 = √M1/M2
Let t1 equal the 1.50 minutes it takes for the combustible gas to disseminate. Let t2 equal the 4.73 minutes it takes for the bromine vapor to disperse.
M1 = the flammable gas's molar mass equals
160 g/mol is the molar mass of the bromine vapor, or M2.
replacing values.
1.50/4.73 = √M1/160
(1.50/4.73) ^2 = M1/160
0.1006 = M1/160
M1 = 0.1006 × 160
M1 = 16 g/mol
Methane is the gas in question.
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