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Well, that depends on what substance it is. There's a way to figure it out, though, for every substance. On the Periodic Table, the Atomic Mass number for every element is the number of grams in 1 mole of that substance. 1 mole of every substance contains a constant number of representative particles, 6.02x1023. That's called Avogadro's number, and it's the most important constant in chemistry. Given a mass of a substance, it's a simple matter of finding out the number of atoms. For example, let's say you have 80 grams of calcium (Ca). Calcium's atomic mass is 40, and that means 40 grams per mole. You have 80 grams, so that's 2 moles. 1 mole of anything contains 6.02x1023 particles, so that number times your 2 moles get you 1.2x1024 atoms of calcium.
What else can I help you with?
Which sample contains the same number of atoms as a gram atomic mass of he?
A gram atomic mass of helium (He) contains the same number of atoms as 1 mole of helium. Since 1 mole of any substance contains approximately 6.022 x 10^23 atoms, a sample of helium with a gram atomic mass would contain that same number of atoms.
Difference between Gram atom and gram molecule?
It's much simpler than you're probably thinking. You use the term gram atomic weight for atoms, and the term gram molecular weight for molecules. That's all. The gram molecular weight of a molecule is the sum of the gram atomic weights of the atoms making up that molecule.
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 is the gram atomic mass?
The gram atomic mass, also known as molar mass, is the mass of one mole of an element or a compound in grams. It is numerically equal to the atomic or molecular weight of the substance in atomic mass units.
How many atomic mass unit 1 gram of a substance have?
1 atomic mass unit is 1.660538921(73)×10−27 kg. 1 gram contain 0,6022.1024 atomic mass units.
How many atoms are there in one gram of hydrogen?
It depends on the atomic mass of a substance. To find out, divide the 1 by the atomic mass of the element (found on the periodic table), then multiply by 6.02*1023. Ag=(1/Am)*6.02*1023 Where Am=atomic mass of the element, and Ag=the number of atoms in a gram.
Which sample contains the same number of atoms as a gram atomic mass of he?
A gram atomic mass of helium (He) contains the same number of atoms as 1 mole of helium. Since 1 mole of any substance contains approximately 6.022 x 10^23 atoms, a sample of helium with a gram atomic mass would contain that same number of atoms.
Difference between Gram atom and gram molecule?
It's much simpler than you're probably thinking. You use the term gram atomic weight for atoms, and the term gram molecular weight for molecules. That's all. The gram molecular weight of a molecule is the sum of the gram atomic weights of the atoms making up that molecule.
How many atoms are in one gram of calcium?
To work this out you need to know the atomic weight of calcium and Avogadros number, which is the number of atoms in a gram atom. Calcium has an atomic weight of 40.078. Therefore a gram ato is 40.078 grams which contains 6.02214129(27)×1023 atoms. 1g of calcium contains 6.02214129(27)×1023 / 40.078 1.502 X 1022
Why is gram or kilogram not used in atomic mass?
bcause whwn we are talking about atoms we use atomic unit
What does the atomic mass of an element tell?
The gram atomic weight or gram Atomic Mass of a chemical element is the mass in grams of Avogadro's number of atoms of the element with the isotopic proportions found in nature.
The molar mass of an element is equal to?
The element's average atomic mass.
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 is the gram atomic mass?
The gram atomic mass, also known as molar mass, is the mass of one mole of an element or a compound in grams. It is numerically equal to the atomic or molecular weight of the substance in atomic mass units.
How many atomic mass unit 1 gram of a substance have?
1 atomic mass unit is 1.660538921(73)×10−27 kg. 1 gram contain 0,6022.1024 atomic mass units.
How many atoms in one gram?
To find the number of atoms in a gram you must have the identity of the substance (the molar mass) and solve for the number of moles in 1 gram moles= 1gram / molar mass of substance # atoms = (moles)(Avogadro's number)
How many atoms are in 1 gram of sulfur?
There are approximately 6.022 x 10^22 atoms in 1 gram of sulfur based on Avogadro's number, which is the number of atoms or molecules in one mole of a substance.
