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Grade: 12th pass

                        

The molecular weight of calcium carbonate CaCO 3 is: (A) 80 (B) 90 (C) 100 (D) 110

one month ago

Answers : (2)

Vikas TU
12277 Points
							
Dear student 
Molecular weight of Ca = 40
Molecular weight of C = 12 
Molecular weight of O = 16 
Molrcular weight of CaCO 3 = 100 g/mol
 
one month ago
Vikas Amritiya
askIITians Faculty
158 Points
							

Molecular weight is the mass of whole molecule.

Steps:- (1) Chemical formula of calcium carbonate CaCO3
(2) Mass of Calcium40
     Mass of Carbon12
     Mass of Oxygen16
(3) Multiply mass of each element by number of atoms of that element.
(4) Add all the masses obtained after multiplication.
CaCO3
=1×40+1×12+3×16
=40+12+48
=100.
one month ago
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