Discussion :: Stoichiometry  Section 1 (Q.No.1)
1.  CaCO_{3} contains __________ percent of Ca by weight. 

Answer: Option A Explanation: No answer description available for this question.

Kamesh said: (May 17, 2012)  
Ca mw=40 CaCO3 mw=100 Therefore 40/100=40% 
Rahat Ali said: (Jul 4, 2013)  
As we have to calculate the percentage of "Ca" in CaCO3. for that we have the formula for finding out the percentage, which is: Percentage = Atomic Mass in Gram/Molecular Mass x 100. Putting values.. Percent = 40/100 x 100. = 40% answer. 
Uthman Shalele said: (Dec 21, 2014)  
Please, I need an answer. Analysis of a carefully purified sample give C = 40%, H = 50%, O = 54%. The mole mass was found to be 180 determine. 
Sriram said: (Apr 15, 2015)  
Molecular weight of calcium is 40. 
Harshpanchal said: (Jul 19, 2015)  
mw of ca = 40. Then caco3 = 100. So 40/100 = 40%. 
Yogesh R said: (Jun 12, 2019)  
The molecular weight of CaCO3 = 100. The atomic weight of ca =40, Percentage of ca in caco3 = (40รท100) * 100, =40. 
Avneesh Rathor said: (Aug 19, 2019)  
Let Mw of caco3 = 100, Awof ca = 40, Percentageof ca incaco3 = 40%100 * 100. 
Prachiti Deshpande said: (Feb 15, 2022)  
Here Molecular weight of Ca = 40. Also Molecular weight of CaCO3 = 40 + 12 +1 6*3 = 100. Percentage of CA in CaCO3 = 40/100= 40%. 
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