Question

After analyzing a sample of 0.085 g Aluminium oxide compound , it is found that it contains 0.045 g of aluminium and 0.04 g of oxygen.Calculate the percentage composition of the compound by weight .

45.5 % Aluminium & 4.5 % Oxygen

9% Aluminium & 8 % Oxygen

52.94% Aluminium & 47.05% Oxygen

52% aluminium & 48 % Oxygen

Which one is correct please help me fast!!!!!! ​

Answer 1

Answer:

52.94 aluminium and 47.05 oxygen js the correctt answeer

Explanation:

(0.04gm of oxygen/0.085)x100=47.05 oxygen

(0.045gm of aluminium/0.085)x100=52.54gm  aluminium