if sample(aluminium ammonium sulphate contains 6%aluminium) what is the approximate percentage of aluminium?
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The formula for aluminum ammonium sulfate, which is a hydrate, is
AlNH4SO4*12H2O
You need to know that to answer the problem.
The atomic weights add up to
27 + 18 + 32 + 64 + (12x18) = 357
Alumimum is only 27 of that total
27/357 = 7.6 % is the answer
To determine the approximate percentage of aluminium in a sample of aluminium ammonium sulphate, you need to know the amount of aluminium present in the sample relative to the total weight of the compound.
1. Start by calculating the amount of aluminium present in 100 grams of the compound sample. If the sample contains 6% aluminium, it means that for every 100 grams of the compound, 6 grams are aluminium.
2. Next, calculate the percentage of aluminium in the compound sample using the formula:
(mass of aluminium / total mass of compound) × 100
Substitute the values into the formula:
(6 grams / 100 grams) × 100 = 6%
Therefore, the approximate percentage of aluminium in the sample of aluminium ammonium sulphate is 6%.