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An atom's Atomic Mass is usually thought of as the total number of protons and neutrons together. Each has a relative mass of 1, so the count of each equals the atom's atomic mass. For example, 1 ordinary atom of sodium (Na) has 11 protons and 12 neutrons. Its atomic mass therefore is 23.

The overall atomic mass of an element, however, is a weighted average of its isotopes, which occur in consistent ratios throughout the universe.

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Subtracting the Atomic number from the atomic mass?

To find the number of neutrons in an atom, you would subtract the atomic number (number of protons) from the atomic mass (sum of protons and neutrons). The difference between the atomic mass and the atomic number gives you the number of neutrons in the atom.


What is the atomic mass number of methane?

The atomic mass number of methane (CH4) is the sum of the atomic masses of its constituent elements. Carbon has an atomic mass of approximately 12, and hydrogen has an atomic mass of approximately 1. Adding these together gives a total atomic mass number of 16 for methane.


What is the relation of atomic mass with atomic no 6 and atomic mass 12 of carbon?

Carbon has 6 protons. With carbon-12 (the most common isotope) there are 6 protons + 6 neutrons, which gives the atomic mass of 12.


Can Atomic mass be used to determine molecular mass?

Yes, the accumulation of atomic masses of the atoms within a molecule is the molecule's molecular mass.


How do you use atomis mass in a sentence?

The atomic mass gives the mass of the atom. It is one of the physical property of the atom.


The number of protons plus the number of neutrons gives the atomic?

Mass


If an atom has the atomic number of 4 and the atomic mass of 9.012 how many electrons will it have?

Atomic mass is protons + neutrons, and the atomic number (4) gives you the number of protons. Thus, this atom would have 5 neutrons.


What is the atomic mass of water?

The atomic mass of water (H2O) is calculated by adding the atomic masses of its constituent elements, which are hydrogen (H) and oxygen (O). The atomic mass of hydrogen is approximately 1, and the atomic mass of oxygen is approximately 16. Therefore, the atomic mass of water is approximately 18 (1 + 1 + 16).


How are the mass number and the atomic number of an elment different?

The atomic number denotes the number of protons in an atom where the mass number gives the sum of protons and neutrons.


What are the number of protons plus the number of neutrons gives the atomic?

The number of protons plus the number of neutrons in an atom gives the atomic mass number. This total reflects the combined mass of the nucleus of an atom, as protons and neutrons contribute significantly to its mass. The atomic mass number is often used to distinguish between different isotopes of an element.


When you subtract the atomic number from the atomic mass of any element you get what?

Atomic mass= Atomic no. + no. of neutrons So when the atomic no. is subtracted from the atomic mass, the result would be equal to the number of neutrons present in the nucleus of the atom of the element.


What is the atomic mass of the compounds CaO?

The atomic mass of Ca (calcium) is approximately 40.08 g/mol, and the atomic mass of O (oxygen) is approximately 16.00 g/mol. To find the molecular mass of CaO, you add the atomic masses of calcium and oxygen, which gives you a total of around 56.08 g/mol.