crude oil is just that, crude. It is not required to know the exact composition of crude oil. Each manufacturer of crude oil will have a different combination to each other.
-Yeah, but each must contain some identical chemicals, otherwise it wouldn't be oil.
-Also it wouldn't be considered a mineral if it didn't have some type of combination of elements.
Matter
The number of protons in the nucleus of an element gives that element its ATOMIC NUMBER.
"The average atomic weight (not mass) of a chemical element is calculated considering the percentage of each natural isotope and the atomic masses of these isotopes."
You can separate substances in a crude oil by distillation process. But you have to know what are the boiling points of each of the substance in the crude oil.
Common macromolecules are hydro-carbon (hydrogen and carbon polymerized to macromolecules). For single element macro molecules, the example is carbon nanotubes.
The term, "crude oil" is a non-scientific one that eludes folks to believe that one crude is like other crudes. Not so. Each crude is unique, and therefore it can't be stated that "crude contains" so and so a percentage of this or that compound.
Matter
the percentage by mass of each element in a compound.
The number of protons in the nucleus of an element gives that element its ATOMIC NUMBER.
The entire barrel is used and each barrel produces about 19.6 gallons of gasoline. Each barrel contains 42 gallons of crude oil.
Mass percentage calculations determine the percentage of an element based on mass in a compound. This can then be used to determine the percentage in a compound of each individual element.
The atomic number is 5becuse it is in the nuclise
Percentage composition= (mass of the element/mass of the molecule)*100 The fraction of the molecule's mass that comes from the element's mass
Because each isotope of an element has a mass different from any other isotope of the same element, and the atomic mass of an element is an average, weighted by the proportion of each isotope, in the naturally occurring element.
Dinitrogen Pentoxide is made up of nitrogen and oxygen. The percentage of composition of each of these elements is: 25.936% nitrogen and 74.064% oxygen.
The abundance percentage of each isotope
Each column will generally have the symbol of the element (sometimes name of the element also), the atomic number, the mass number, the state in which the element is present at room temperature. Some Periodic Table will also have the electronic configuration or electronegativity.