Chemical Engineering - Stoichiometry - Discussion
Discussion Forum : Stoichiometry - Section 1 (Q.No. 1)
1.
CaCO3 contains __________ percent of Ca by weight.
Discussion:
9 comments Page 1 of 1.
Rahat Ali said:
1 decade ago
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.
Percentage = Atomic Mass in Gram/Molecular Mass x 100.
Putting values.. Percent = 40/100 x 100.
= 40% answer.
Uthman shalele said:
1 decade ago
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.
Analysis of a carefully purified sample give C = 40%, H = 50%, O = 54%. The mole mass was found to be 180 determine.
Prachiti Deshpande said:
4 years ago
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%.
Also Molecular weight of CaCO3 = 40 + 12 +1 6*3 = 100.
Percentage of CA in CaCO3 = 40/100= 40%.
(7)
Yogesh R said:
6 years ago
The molecular weight of CaCO3 = 100.
The atomic weight of ca =40,
Percentage of ca in caco3 = (40÷100) * 100,
=40.
The atomic weight of ca =40,
Percentage of ca in caco3 = (40÷100) * 100,
=40.
Avneesh rathor said:
6 years ago
Let
Mw of caco3 = 100,
Awof ca = 40,
Percentageof ca incaco3 = 40%100 * 100.
Mw of caco3 = 100,
Awof ca = 40,
Percentageof ca incaco3 = 40%100 * 100.
(2)
Harshpanchal said:
1 decade ago
mw of ca = 40.
Then caco3 = 100.
So 40/100 = 40%.
Then caco3 = 100.
So 40/100 = 40%.
Kamesh said:
1 decade ago
Ca mw=40
CaCO3 mw=100
Therefore 40/100=40%
CaCO3 mw=100
Therefore 40/100=40%
Sandeep chodu said:
7 months ago
Thanks for giving a clear explanation.
(1)
Sriram said:
1 decade ago
Molecular weight of calcium is 40.
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