Which of the following correctly identifies the number of each element involved in the chemical formulas?
NH4CO3
O
N: 4
H: 4
C: 3
O: 3
O
N: 1
H: 1
C: 1
O: 3
)
N: 0
HR 4
C: 0
O: 3
N: 1
H: 4
C: 1
0:3