If a quarter of the mass of the molecule is iron and the mass of the molecule is 89600u, then the mass of iron is 22400u ... a quarter of the total mass.
it is the sum of the atomic masses of all the elements present in a molecule.
There is really no such thing as a "metal molecule" although there do exist molecules that have some metals in them. There are no molecules made entirely out of metal (since you would get a metallic bond, and hence a metal, rather than a molecule). The hemoglobin molecule is a good example of an organic molecule which also contains iron. And yes, in hemoglobin, the iron has a covalent bond.
hemogoblin
An Iron containing protein and is located on oxygencontaining molecule.
The molecular formula is used to get the total number of atoms belonging to each element that is present in a single molecule of a particular compound. The formula is common in physics, chemical engineering and chemistry.
Hemoglobin is not a living thing. Hemoglobin is simply a molecule capable of temporarily binding with oxygen and carrying that oxygen to where it is needed, then giving it up and returning to be reoxygenated. Hemoglobin is present in red blood cells, but does not metabolize, neither does it generate nor utilize energy itself, generally considered parameters that define 'living'.
Hemoglobin is present in red blood cells.
the answer is hemoglobin.
All of the elements in hemoglobin are inorganic. The important element is iron, which allows hemoglobin to carry oxygen (and carbon dioxide).The elements present in hemoglobin are iron, sulfur, nitrogen, carbon, hydrogen, and oxygen.
Hemoglobin present while chlorophyll absent .
Well first you should determine the molecular mass of your glucose molecule, then you should divide the molecular mass of all the carbon by this, if I recall correctly. Should look something like (12X6) / ((6X12)+(12X1)+(6X16)) All multiplied by 100 to make it a percentage. Gives something like 40% which sounds like the right answer looking at the question.
Each molecule of hemoglobin combines with 4 oxygen molecules to carry oxygen from the lungs through the bloodstream to the organs.