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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.
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What is the exact mass of calcium acetate?
The exact molar mass of calcium acetate is 158.17 g/mol.
What is the mass number of 15.9994?
The mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom. For an atom with a mass number of 15.9994, it indicates the average atomic mass of an oxygen atom.
The mass number of an element is the number of?
Mass number is the atomic mass of a particular isotope (apex chem 5.3)
In order to calculate the number of neutrons you must subtract the from the?
In order to calculate the number of neutrons, you subtract the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number). Neutrons are important for stabilizing the atomic nucleus alongside protons.
What is the mass number and atomic number of nitrogen?
Mass number: 14 Atomic/proton number: 7 If you look at the periodic table, the mass number is the top and the atomic number is the bottom number.
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.
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.
Is the isotopic mass of given isotope ever an exact while number?
No, the isotopic mass of an isotope is not an exact whole number because it accounts for the average mass of all the isotopes of that element found in nature, which have different masses due to varying numbers of neutrons. The isotopic mass is usually reported as a decimal number.
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?
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.
In what ways are?
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.
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
Why is the mass numbers of isotopes exact whole numbers but the relative masses of most Atoms are not exact whole numbers?
Relative atomic massisthe ratio of the averagemassofatomsof anelementto 1/12 of the mass of an atom ofcarbon-12. The mass number of an isotope is the sum of protons and neutrons in the atoms of the isotope.
