Answer:
397.76 g
Explanation:
From the question given above, the following data were obtained:
Number of mole of A₃B₄C₈D₉ = 0.44 mol.
Mass of A₃B₄C₈D₉ =.?
Next, we shall determine the molar mass of A₃B₄C₈D₉. This is illustrated below:
Molar mass of A₃B₄C₈D₉ = (3×7) + (4×26) + (8×40) + (9×51)
= 21 + 104 + 320 + 459
= 904 g/mol
Finally, we shall determine the mass of A₃B₄C₈D₉. This can be obtained as follow:
Number of mole of A₃B₄C₈D₉ = 0.44 mol.
Molar mass of A₃B₄C₈D₉ = 904 g/mol
Mass of A₃B₄C₈D₉ =?
Mole = mass /Molar mass
0.44 = mass /904
Cross multiply
Mass = 0.44 × 904
Mass of A₃B₄C₈D₉ = 397.76 g
Therefore, the mass of A₃B₄C₈D₉ is 397.76 g
