Answer:
The mass of 0.40 mol of aspirin : 72 g
Further explanation
Mole itself is the number of particles contained in a substance
1 mole = 6.02.10²³ particles
Mole can be determined if the amount of substance mass and its molar mass is known
Given
0.4 mol of aspirin
Required
The mass
Solution
Aspirin : C₉H₈O₄
Molar mass : 180.157 g/mol
The mass :
= mol x molar mass
= 0.4 mol x 180.157 g/mol
= 72.063 ≈ 72 g(A)
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