How many atoms of each element is in #CaCO_3#?

1 Answer
Cronus G.
Dec 2, 2016

Element: 1 atom
Compound: 2+ atoms
Ca - C - O3
Therefore: 5 atoms!
Molar mass is a different story:

Explanation:

Molar mass:
Add the atomic mass of whole equation
Ca: 40
C: 12
O: 16 since it is O3 times 16 by 3

#40 + 12 + 16(3) = 100# g/ml

100 is the molar mass of the formula

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