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To convert mass to atoms:
Find the Atomic Mass of the element in the substance. You can find atomic masses on the Periodic Table. Ex. Lithium's atomic mass is 6.9 grams (round if you need to)
Then find the mass of the substance in grams. Ex. you have 18.2 grams of a sample of Lithium.
The mass of the sample is multiplied by 6.02 * 1023 and divided by the atomic mass.
Ex.
mass of sample in grams * (6.02 * 1023 atoms) / (atomic mass) = # atoms in grams
18.2 grams * (6.02 * 1023 atoms) / (6.9 grams) = 1.59* 1024 atoms
The number 6.02 * 1023 is Avogadro's Constant which is the amount of atoms (or molecules) in one mole.
Wiki User
∙ 15y ago
Wiki User
∙ 10y agoIf you are finding the mass of a few molecules, firstly you divide the amount of molecules by avagadro's number to get the moles. Then multiply the moles by the molecular mass, giving the amount of grams
Wiki User
∙ 10y agoDivide by avagadro's number then multiply by molecular weight
Wiki User
∙ 8y agoYes there is a unit. Generally we use g as unit.
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What is the difference between atomic mass and atomic mass unit?
The atomic mass unit is used to express the measure of the atomic mass.
What is an amu and does it relate to atoms?
AMU stands for atomic mass unit. 1 amu is 1.66053892 times 10 up to the negative 27 kilograms.
What is one twelfth of the mass of the carbon 12 atom?
the answer is the atomic mass unit
Atomic mass unit is determined by Oxygen-16?
The atomic mass unit is 1/12 from the atomic mass of the isotope 12C.
What is the atomic mass unit?
The atomic mass unit is 1/12 from the atomic mass of the isotope carbon-12, in steady state.
Is atomic mass unit a SI unit of an atomic mass?
The atomic mass unit is not a SI unit. An atomic mass unit is equal to 1/12 from the atomic mass of the isotope 12C.
What is the unit of measurement use for atomic particles?
Atomic mass unit
What is the difference between atomic mass and atomic mass unit?
The atomic mass unit is used to express the measure of the atomic mass.
What is an amu and does it relate to atoms?
AMU stands for atomic mass unit. 1 amu is 1.66053892 times 10 up to the negative 27 kilograms.
What is the unit for the mass of atomic particles?
Atomic Mass Unit (amu)
Relative atomic masses are measured in?
Atomic mass is measured in a unit called an "atomic mass unit". This unit is defined as 1/12 of the mass of a carbon-12 atom at ground state.An atomic mass unit is approximately 1.66053886 x 10-27 kg.Atomic mass is measured in atomic mass units (amu) and Daltons.
What is one twelfth of the mass of the carbon 12 atom?
the answer is the atomic mass unit
Atomic mass unit is determined by Oxygen-16?
The atomic mass unit is 1/12 from the atomic mass of the isotope 12C.
What is atomic mass unit?
The Atomic Mass unit is 1/12 from the atomic mass of the isotope carbon-12, in steady state.
What is the atomic mass unit?
The atomic mass unit is 1/12 from the atomic mass of the isotope carbon-12, in steady state.
What special unit is used to measure atomic mass?
Atomic mass is measured by atomic mass unit(amu) . It is given by 'u' i.e. unified mass.
Atomic mass is measured by what?
atomic mass unit, or amu
