Ca(H2PO4)2 = 2 Ca + 4 H + 2 P + 8 O = 21 + 42 + 12 + 81 = 2 + 8 + 2 + 8 = 20 atomsNO = 1 N + 1 O = 11 + 11 = 1 + 1 = 2 atomsAl = 1 Al = 1 atomCO2 = 1 C + 2 O = 11 + 21 = 1 + 2 = 3 atomsCa = 1 Ca = 1 atomNaOH = 1 Na + 1 O + 1 H = 11 + 11 + 11 = 1 + 1 + 1 = 3 atomsH2SO4 = 2 H + 1 S + 4 O = 21 + 11 + 41 = 2 + 1 + 4 = 7 atomsN2 = 2 N = 21 = 2 atomsFe(OH)3 = 1 Fe + 3 O + 3 H = 11 + 31 + 31 = 1 + 3 + 3 = 7 atomsH3PO4 = 3 H + 1 P + 4 O = 31 + 11 + 41 = 3 + 1 + 4 = 8 atomsP2O5 = 2 P + 5 O = 21 + 51 = 2 + 5 = 7 atomsZnO = 1 Zn + 1 O = 11 + 11 = 1 + 1 = 2 atomsAl(OH)3 = 1 Al + 3 O + 3 H = 11 + 31 + 31 = 1 + 3 + 3 = 7 atomsS = 1 S = 1 atomH2O = 2 H + 1 O = 21 + 11 = 2 + 1 = 3 atomsSO2 = 1 S + 2 O = 11 + 21 = 1 + 2 = 3 atomsNa2O = 2 Na + 1 O = 21 + 11 = 2 + 1 = 3 atomsO3 = 3 O = 3*1 = 3 atoms
Ca(H2PO4)2 = 2 Ca + 4 H + 2 P + 8 O = 21 + 42 + 12 + 81 = 2 + 8 + 2 + 8 = 20 atoms
NO = 1 N + 1 O = 11 + 11 = 1 + 1 = 2 atoms
Al = 1 Al = 1 atom
CO2 = 1 C + 2 O = 11 + 21 = 1 + 2 = 3 atoms
Ca = 1 Ca = 1 atom
NaOH = 1 Na + 1 O + 1 H = 11 + 11 + 11 = 1 + 1 + 1 = 3 atoms
H2SO4 = 2 H + 1 S + 4 O = 21 + 11 + 41 = 2 + 1 + 4 = 7 atoms
N2 = 2 N = 21 = 2 atoms
Fe(OH)3 = 1 Fe + 3 O + 3 H = 11 + 31 + 31 = 1 + 3 + 3 = 7 atoms
H3PO4 = 3 H + 1 P + 4 O = 31 + 11 + 41 = 3 + 1 + 4 = 8 atoms
P2O5 = 2 P + 5 O = 21 + 51 = 2 + 5 = 7 atoms
ZnO = 1 Zn + 1 O = 11 + 11 = 1 + 1 = 2 atoms
Al(OH)3 = 1 Al + 3 O + 3 H = 11 + 31 + 31 = 1 + 3 + 3 = 7 atoms
S = 1 S = 1 atom
H2O = 2 H + 1 O = 21 + 11 = 2 + 1 = 3 atoms
SO2 = 1 S + 2 O = 11 + 21 = 1 + 2 = 3 atoms
Na2O = 2 Na + 1 O = 21 + 11 = 2 + 1 = 3 atoms
O3 = 3 O = 3*1 = 3 atoms