Problem: A mixture of CaCO3 and (NH4 )2 CO3 is 61.1 % CO3 by mass.Find the mass percent of CaCO3 in the mixture.

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FREE Expert Solution

We are asked to find the mass percent of CaCO3 in the mixture.


Assume 100 of the mixture. 


Mass CO3 = 61.1 g

Moles CO3 =61.1 g60 g/mol = 1.02 mol CO3 


Molar mass CaCO3 = 100 g/mol

Molar mass (NH4)CO3 = 96 g/mol


Calculate mass CaCO3 in the mixture:

mass CaCO3100+100 -mass CaCO396 = 1.02 96(mass CaCO3)+10,000 -100(mass CaCO3 )= 9792mass CaCO3 = 52 g


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Problem Details

A mixture of CaCO3 and (NH4 )2 CO3 is 61.1 % CO3 by mass.

Find the mass percent of CaCO3 in the mixture.

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

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor N/A's class at Ryerson University.