Problem: A 0.45-g sample of aspirin is decomposed into its constituent elements and found to contain 0.27 g C, 0.020 g H, and 0.16 g O.Calculate the mass percent compositions of C, H, and O in aspirin. Express your answers to two significant figures separated by commas.

FREE Expert Solution

We are asked to calculate the mass percent compositions of C, H, and O in aspirin, and to do that we’re going to use the mass percent formula shown below:

mass percent=mass of elementtotal mass of compound×100


Given: mass sample = 0.45 g 


For C:

mass C = 0.27 g

100% (458 ratings)
View Complete Written Solution
Problem Details

A 0.45-g sample of aspirin is decomposed into its constituent elements and found to contain 0.27 g C, 0.020 g H, and 0.16 g O.

Calculate the mass percent compositions of C, H, and O in aspirin. Express your answers to two significant figures separated by commas.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mass Percent concept. You can view video lessons to learn Mass Percent. Or if you need more Mass Percent practice, you can also practice Mass Percent practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Nguyen's class at SMC.