Problem: Determine the mass of oxygen in a 7.2-g sample of Al2(SO4)3. Express the mass in grams to two significant figures.

FREE Expert Solution

Find the mass of O in Al2(SO4)3:

Given:

Mole Ratio: 1 mol Al2(SO4)3: 12 moles O

Mass of Sample: 7.2 g

Obtain the following data from books and the internet

Molar mass of Al2(SO4)3: 342.15 g/mol

Molar Mass O: 16.00 g/mol



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Problem Details

Determine the mass of oxygen in a 7.2-g sample of Al2(SO4)3. Express the mass in grams to two significant figures.

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 Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.

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