Respuesta :
Δg = 587.9 KJ
CH₄ Molar mass = 16.05 g/mol
mol CH₄ = Δg / ΔH°
= 587.9 / 890.3 KJ/ mol
= 0.6603 mol CH₄
Mass CH₄ = 0.6603 × 16.05 g/mol
= 10.591 g
Therefore, the mass of CH₄ is 10.591 g.
Molar mass/molecular weight is actually the sum of the total masses (in grams) of the atoms present to make up one molecule per mole. The unit of molar mass is grams/mole.
Molar mass is the mass, in grams, of one mole of a substance. The molar mass of an element can be calculated from the atomic mass of the element, multiplied by the conversion factor per mole (g/mol).
The molar mass of a compound indicates the mass of 1 mole of this substance. In other words, it indicates the number of grams per mole of compound.
Learn more about molar mass here:https://brainly.com/question/837939
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