If a team official, substitute, substituted or sent off player or outside agent enters the field of play the referee must: 1  only stop play if there is interference with play. 2  have the person removed when play stops. 3  take appropriate disciplinary action.
The bicarbonate ion (hydrogencarbonate ion) is an anion with the empirical formula H C O 3 â and a molecular mass of 61.01 daltons; it consists of one central carbon atom surrounded by three oxygen atoms in a trigonal planar arrangement, with a hydrogen atom attached to one of the oxygens.
Hemoglobin is the part of the red blood cell that carries oxygen. Hemoglobin is a protein that has iron on it, and this iron is what the oxygen binds to. This is why iron defi â¦ ciency can result in anemia. 9 people found this useful.he hemoglobin molecules in red blood cells contains four iron atoms which all can have four bonds to oxygen atoms. Thus, red blood cells â¦ transport oxygen.