Answer:
80g
Explanation:
Given parameters:
Number of moles of O₂ = 2.5moles
Unknown:
Mass of O₂ = ?
Solution:
To solve this problem, we use the expression below
Mass = number of moles x molar mass
Molar mass of O₂ = 2(16) = 32g/mol
So;
Mass = 2.5 x 32 = 80g
