Answer:
A.The potential energy increases because the charges have a greater repulsion.
Explanation: Thanks to Mwilliams55513 for the help :}
Answer:
148 grams of relative atomic mass
Explanation:
magnesium atomic mass : 24
nitrogen : 14
oxygen : 16
24 × 1
14 × 1 × 2
16 × 3 × 2
24 + 28 + 80 = 148 grams