human
How many atoms of Oxygen are in Mg(NO3)2 + K2CO3?
gpt
There are 9 atoms of Oxygen.
Explanation: The compound Mg(NO3)2 contains 6 oxygen atoms in its two nitrate ions (NO3-) and the compound K2CO3 contains 3 oxygen atoms in its carbonate ion (CO3^2-), making a total of 9 oxygen atoms.