How many nitrogen atoms are in 4.24 x 1022 molecules of Ca (NO3) 2?

8.48 * 10²² atoms of Nitrogen

Explanation:

Calcium Carbonate is an ionic compound made up to Calcium (Ca²⁺) and Nitrate (NO₃⁻) ions. Also, the subscript 2 after the closed bracket after NO₃ specifies that there are two moles of NO₃⁻ in calcium nitrate compound. Hence, in total we can say that this compound contain,

1 atom of Calcium

2 atoms of Nitrogen

6 atoms of Oxygen

Therefore,

When,

1 molecule of Ca (NO₃) ₂ contains = 2 atoms of Nitrogen

Then,

4.24 * 10²² molecules of Ca (NO₃) ₂ will contain = X atoms of Nitrogen

Solving for X,

X = 2 atoms * 4.24 * 10²² molecule / 1 molecule

X = 8.48 * 10²² atoms of Nitrogen