A sample containing aluminium weighing 10g yielded 2g of aluminium sulphide. What is percentage of aluminium in the sample?
Answers
Answer:
To find the percentage of aluminum in this sample, you need to find the mass percent of a sample. You find the mass percent by dividing the mass of the finished product in grams (in this case, 2.0g) with the total mass of the initial sample of reactant (in this case, 10.0g):
Mass % = mass of finished product of sample (in grams) / mass of starting reactant sample (in grams) * 100%
So:
Mass % = 2.0g / 10.0g * 100% (units in grams cancel out)
Mass % = .20 * 100%
Mass % = 20%
It is crucial for submitting correct answers on tests and homework to at this point verify your significant figures throughout the problem, and adjust your solution value to the smaller amount of sigfigs presented in the problem:
2.0g - 2 sigfigs
10.0g - 3 sigfigs
Explanation:
Answer: options nishta?
Explanation: