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Why actual atomic mass is greater than mass number?
Mass number = number of protons + number of neutrons in an atom
What is the atomic mass of an atom if its mass is approximately one third that of carbon 12?
The atomic mass number of an atom, if the atom's mass number is approximately equal to 0.33 that of carbon-12, would be 4. If the question is about actual masses rather than mass numbers, the mass of a helium-4 atom is about 4.00260 atomic mass units, while the mass of a carbon-12 atom is, by definition, exactly 12.000..... atomic mass units.
Why does not atomic mass of element represent the actual mass of the atoms?
Because the gram atomic mass of an element is the mass in grams of Avogadro's Number of atoms. To find the actual mass of a single atom, the gram atomic mass must therefore be divided by 6.022 X 1023.
What are the units for mass defect?
The units for mass defect are atomic mass units (amu) or kilograms (kg). It represents the difference between the sum of the masses of individual nucleons within an atom and the actual measured mass of the nucleus.
How do you find the total mass of an atom?
To find the total mass of an atom, you sum the masses of its protons, neutrons, and electrons. Although electrons contribute very little to the overall mass, the combined mass of protons and neutrons, which are located in the nucleus, accounts for most of the atom's mass. The atomic mass can be found on the periodic table, typically expressed in atomic mass units (amu), which reflects the average mass of the atom's isotopes. For a more precise calculation, you can use the actual masses of protons (approximately 1.007 amu) and neutrons (approximately 1.008 amu) along with the negligible mass of electrons (approximately 0.0005 amu).
Why does not an atom of an element represent the actual mass of its atom?
An atom of an element does not represent the actual mass of its atom because the atomic mass listed on the periodic table is an average mass calculated based on the relative abundance of different isotopes of the element. Isotopes are atoms of the same element with differing numbers of neutrons, so the actual mass of an atom of a specific isotope may vary slightly from the average atomic mass.
Why actual atomic mass is greater than mass number?
Mass number = number of protons + number of neutrons in an atom
What is the atomic mass of an atom if its mass is approximately one third that of carbon 12?
The atomic mass number of an atom, if the atom's mass number is approximately equal to 0.33 that of carbon-12, would be 4. If the question is about actual masses rather than mass numbers, the mass of a helium-4 atom is about 4.00260 atomic mass units, while the mass of a carbon-12 atom is, by definition, exactly 12.000..... atomic mass units.
Why does not atomic mass of element represent the actual mass of the atoms?
Because the gram atomic mass of an element is the mass in grams of Avogadro's Number of atoms. To find the actual mass of a single atom, the gram atomic mass must therefore be divided by 6.022 X 1023.
What are the units for mass defect?
The units for mass defect are atomic mass units (amu) or kilograms (kg). It represents the difference between the sum of the masses of individual nucleons within an atom and the actual measured mass of the nucleus.
Is an oxygen atom have twice the mass of a sulphur atom?
No, an oxygen atom does not have twice the mass of a sulfur atom. An oxygen atom has a mass of approximately 16 atomic mass units (amu), while a sulfur atom has a mass of approximately 32 amu. Therefore, a sulfur atom has twice the mass of an oxygen atom.
What is the mass defect formula used to calculate the difference in mass between the nucleus of an atom and the sum of its individual nucleons?
The mass defect formula is used to calculate the difference in mass between the nucleus of an atom and the sum of its individual nucleons. It is calculated by subtracting the actual mass of the nucleus from the sum of the masses of its individual protons and neutrons.
The relative atomic mass of an atom can be found by comparing the mass of the atom to the mass of?
The Hydrogen atom. Beware, Hydrogen has an atomic mass based on one proton, as it doesn't have a neutron. So Helium has a mass of four times Hydrogen.
What represents most of an atom's mass?
The nucleus of an atom represents most of an atom's mass.
What is the difference in molar mass and atomic mass?
molar mass is the actual mass of the one atom but relative mass is the average isotopes of the atoms.------------------------------------------Atomic mass is the mass of an isotope, expressed in atomic mass units.Molar mass is the mass of molecule, calculated from the atomic weights of the contained chemical atoms, expressed in grams.
What does adding A neutron to an atom's do to the atom's mass?
Adding a neutron increases the atom's mass by about 1 AMU assuming it remains stable.
Which of the following particles is used to determine the mass of an atom?
Mass of an atom is determined by the no. of protons+ no. of neutrons in the atom.
