Question

Write the formula for Lime stone and calculate the molecular mass for Lime stone.

Answer 1

• The formula of caustic potash is ${\mathrm{CaCO}}_3$
• Molecular mass of a substance is defined as the sum of masses of atoms or elements present in the molecule.
• So the atomic mass of =Atomic mass of $\mathrm{Ca}$+Atomic mass of $\mathrm{C}$+Atomic mass of$\mathrm{O}$$\times 3$

$$\begin{gathered} =40+12+16\times 3 \\ =100u \end{gathered}$$