Which is the next logical step in balancing the given equation?
n2 + o2 → no2

a. place the coefficient 2 in front of oxygen and nitrogen dioxide.
b. place the coefficient 3 in front of oxygen and nitrogen dioxide.
c. the equation is already balanced.
d. change the subscript of the nitrogen molecule to 1.

To balance the given equation, we apply elemental balance and count each elements per side. There are 2 nitrogens in the left side so there should be 2 moles of NO2. Since there are already 4 moles of O in the right side, there should be 2 moles of O2. Hence answer is a. Place the coefficient 2 in front of oxygen and nitrogen dioxide.

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.