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What is the approximate atomic mass of an atom if its mass is 12 times that of carbon-12?
Wiki User
∙ 11y ago
The mass of an atom of C12 is exactly 12 Atomic Mass units by definition. In other words, the precise value of Mu was chosen by the scientific community to make C12 weigh 12 Mu.
The exact mass (in grams) of 1 Mu is 1/NA where NA is Avogadro's number. That means that the mass of 1 atom of C12 weighs 12/NA grams. Since NA ~=6 X 10 23
1 atom of C12 weighs 12/(6 x 1023 ) grams, or ~= 2 x 10-23 gm.
Wiki User
∙ 14y ago
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Why is the atomic mass scale also called the relative atomic mass scale?
All atomic masses are determined by comparing them to the mass of an atom of carbon12. One atomic mass unit equals one twelfth the mass of an atom of carbon12. That's why its called relativeatomic mass.
What is the approximate mass of an oxygen atom in atomic mass units?
16 amu
An unknown atom has 26 neutrons and an approximate atomic mass of 48 What is the name of this element?
That has an atomic mass of (45 + 56), or 101.
What is the approximate mass of a neon-11 atom?
The approximate mass is 11. Technically you could express this in units of daltons as 11 Da (Daltons previously called amu, atomic mass unit, or as 11 (the dimensionless, relative atomic mass which chemists simply call atomic weight) .
What has a heavier atomic weight gold or oxygen?
The atomic mass of Carbon is 12.0107 The atomic mass of Gold is 196.96657 So an atom of Gold is about 16 times heavier than an atom of Carbon.
Why is the atomic mass scale also called the relative atomic mass scale?
All atomic masses are determined by comparing them to the mass of an atom of carbon12. One atomic mass unit equals one twelfth the mass of an atom of carbon12. That's why its called relativeatomic mass.
The approximate mass of the hydrogen atom?
The conventional standard atomic weight of the hydrogen atom is 1,008 amu.
What is the approximate mass of an oxygen atom in atomic mass units?
16 amu
What is the Mass number of a bromine atom?
Bromine has an approximate atomic mass of 79.904.
An unknown atom has 26 neutrons and an approximate atomic mass of 48 What is the name of this element?
That has an atomic mass of (45 + 56), or 101.
What are the atomic numbers and atomic mass?
Atomic Number :- atomic number of an element is the number of protons present in the nucleus of the atom. (since atoms are electrically neutral the number of protons in an atom is equal to the number of electrons in an atom) Atomic Mass :- atomic mass of an element is the number which tells us how many times an atom of that element is heavier than an atom of hydrogen (whose atomic weight is taken as unity [1])
What is the approximate mass of a neon-11 atom?
The approximate mass is 11. Technically you could express this in units of daltons as 11 Da (Daltons previously called amu, atomic mass unit, or as 11 (the dimensionless, relative atomic mass which chemists simply call atomic weight) .
What is heavier one atom carbon or one atom gold?
The Atomic Mass of Carbon is 12.0107 The atomic mass of Gold is 196.96657 So an atom of Gold is about 16 times heavier than an atom of Carbon.
What has a heavier atomic weight gold or oxygen?
The atomic mass of Carbon is 12.0107 The atomic mass of Gold is 196.96657 So an atom of Gold is about 16 times heavier than an atom of Carbon.
What is the atomic number of an atomic indicate?
Atomic number of an atom shows the number of protons in the nucleus of the atom. OR Atomic number of an atom is the number of electrons in the atom when the atom neutrally charged
How many times an atom of calcium is heavier than an atom of oxygen?
Average atomic mass of Ca = 40.1 Average atomic mass of O = 16.0 Mr(Ca)/Mr(O) = 40.1/16.0 = 2.51 Thus the calcium atom is about 2.5 times heavier than the oxygen atom.
How many electrons does silicon -28 have?
Silicon atoms, atomic number 14, have 14 protons in the nucleus. The neutral atom then has 14 electrons. Silicon 28 the most common isotope of silicon has 14 neutrons in the nucleus giving a mass number of 28. The Atomic Mass of silicon 28 relative to carbon12=12. is 27.9769265325(19)
