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Aneli [31]
3 years ago
10

What is the percent composition of CaCO₃? Show your work. *

Chemistry
1 answer:
pshichka [43]3 years ago
8 0
First fine the formula weight for <span>CaCO₃ by adding the atomic mass of each atom - Ca (40.078g) + C (12.0107g) + O * 3 (15.9994g * 3) = 100.0869g

Take the mass of each individual atom type, divide by the overall mass (100.0869g) and multiply by 100 to find the percent composition of each atom type.

(40.078g)/(100.0869g) * 100 = 40.042%
(12.0107g)/(100.0869g) * 100 = 12.0003%
(15.9994g * 3)/(100.0869g) * 100 = 47.9565%</span>
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4 years ago
How many grams of Co are needed to react with an excess of fe203 to produce 156.2 g FE? show your work.
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Fe2O3 (s)+ 3CO(g)--->3CO2(g)+ 2Fe(s)

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The answer will be Ligand A with a dissociation constant (Kd) of 10^{-9}M

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