Question: Examine each of these chemical equations to determine which equation is correctly balanced.
Options:
Mg(NO_{3})_{2} + K_{2}CO_{3} -> MgCO_{3} + KNO_{3}
Mg(NO_{3})_{2} + K_{2}CO_{3} -> MgCO_{3} + 2KNO_{3}
2Mg(NO_{3})_{2} + K_{2}CO_{3} -> 2MgCO_{3} + KNO_{3}
Mg(NO_{3})_{2} + 2K_{2}CO_{3} -> MgCO_{3} + 2KNO_{3}
Answer: Mg(NO_{3})_{2} + K_{2}CO_{3} -> MgCO_{3} + 2KNO_{3}