How many atoms of oxygen are represented in  2Ca(NO3)2?1236

To find the number of oxygen atoms in 2Ca(NO3)2, follow these steps:

1. Identify the number of nitrate ions (NO3) in the compound. In this case, the subscript outside the parentheses indicates there are 2 nitrate ions for each calcium ion (Ca).

2. Multiply the number of nitrate ions by the number of calcium ions. In this case, there are 2 calcium ions, so 2*2 = 4 nitrate ions in total.

3. Each nitrate ion consists of 3 oxygen atoms (as indicated by the subscript 3 in NO3). So, multiply the total number of nitrate ions by 3 to find the total number of oxygen atoms. In this case, 4*3 = 12 oxygen atoms.

4. Finally, multiply the number of oxygen atoms by the number of molecules (in this case, 2). So, 12*2 = 24 oxygen atoms.

So, there are 24 atoms of oxygen in 2Ca(NO3)2.