Question
7) Mg(NO_(3))_(2) Mg:underline ( ) N: __ O: __
Answer
4.1
(320 Votes)
Jade
Master · Tutor for 5 years
Answer
Mg: 1N: 2O: 6
Explanation
The compound \(\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}\) is magnesium nitrate. In this chemical formula, the subscript outside the parentheses applies to everything inside the parentheses. Therefore, we have one magnesium atom (Mg), two nitrogen atoms (N), and six oxygen atoms (O) because there are two nitrate groups, each containing three oxygen atoms.- For magnesium (Mg), there is no subscript next to the symbol, which means there is only one magnesium atom.- For nitrogen (N), the subscript inside the parenthesis is 1 (which is typically not written), and since there are two nitrate groups, we have 2 nitrogen atoms.- For oxygen (O), the subscript inside the parenthesis is 3, and since there are two nitrate groups, we multiply 3 by 2 to get 6 oxygen atoms.