0
The Atomic Mass units of an element are never simple numbers because it is impossible to determine the number of molecules in one element, and as a result we are simply left with a vague idea of how many grams per one mole (which is composed of molecules) of that element.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is the exact mass of calcium acetate?
158.168 amu (atomic mass units)
In order to calculate the number of neutrons you must subtract the from the?
Number of neutrons = Mass number - atomic number
The mass number of an element is the number of?
Mass number is the atomic mass of a particular isotope (apex chem 5.3)
Can you use the mass number of an element to determine the number of electrons in an atom?
Mass number = number of protons + number of neutrons Number of electrons = number of protons = mass number of an isotope - number of neutrons
What is the mass number of deterium?
The mass number of deuterium is 2
What Make up 50 percent of the atomic mass of the nucleus?
Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.
How are atomic mass and atom numbers related?
The mass number is the number of the Atomic Mass. The atomic mass is the mass of the atom of the element. There is no difference between the two, except mass number is referring to the number, while atomic mass is referring to the atom's mass in general, which is also expressed by a number. Basically, both terms mean the exact same thing.
What is the exact value of sodium?
The relative mass number of sodium is 23. The atomic number is 11. It has a valency of one.
Why are the mass of the products the same during the magnesium and hydrochloric acid reaction?
Mg + 2HCl --> MgCl2 + H2 Count the atoms on the left and then count the atoms on the right. You will see the exact number of atoms and this exact number of atoms will have the same mass.
What is the exact of earth?
You might want to rephrase your question. What are you looking for? Mass? Number of people? Number of jelly beans on Earth?
Is the isotopic mass of given isotope ever an exact while number?
Excepting carbon-12 all the isotopes have an atomic mass which is not an integer.
What is the atomic mass number of the curium?
The atomic number if curium (Cm) is 96 and its approximate atomic mass is (247). The () denotes that the exact mass is not confirmed, as curium is radioactive and unstable. So it is not easy to calculate the exact mass of all its isotopes.
What is the mass defect?
If you add the exact mass of the protons, neutrons, and electrons in an atom you do not get the exact atomic mass of the isotope. The diference is called the mass defect. The difference between the mass of the atomic nucleus and the sum of the masses of the particles within the nucleus is known as the mass defect.
In what ways are?
They do not have the exact same color, mass, diameter, number of moons, atmosphere composition, name, or gravity.
What ways are different?
They do not have the exact same color, mass, diameter, number of moons, atmosphere composition, name, or gravity.
In what ways are different?
They do not have the exact same color, mass, diameter, number of moons, atmosphere composition, name, or gravity.
Definition of aatomic mass?
not exact but the mass of an atom
