human
How many atoms of oxygen are in 3Cu(NO₃)₂?
gpt
There are 18 atoms of oxygen in 3Cu(NO₃)₂.
Explanation: The formula Cu(NO₃)₂ indicates that each molecule of the compound contains 2 nitrate ions, each of which contains 3 oxygen atoms. Therefore, the total number of oxygen atoms in one molecule of Cu(NO₃)₂ is 2 * 3 = 6. Since there are 3 molecules of Cu(NO₃)₂, the total number of oxygen atoms is 3 * 6 = 18.