Answer: The number of formula units in the given amount of magnesium carbonate is

Step-by-step explanation:
Formula units is defined as lowest whole number ratio of ions in an ionic compound. It is calculate by multiplying the number of moles by Avogadro's number which is

We are given:
Number of moles of magnesium carbonate = 8.05 moles
Number of formula units =

Hence, the number of formula units in the given amount of magnesium carbonate is
