- One Atomic Mass Unit Is Equal To Grams
- One Atomic Mass Unit Is Equal To How Many Grams
- Atomic Units Conversion
- How To Calculate Atomic Mass Unit
Please provide values below to convert Atomic mass unit [u] to kilogram [kg], or vice versa.
A unit of mass used to express atomic and molecular weights, equal to one-twelfth of the mass of an atom of carbon-12. It is equal to approximately 1.66 x 10^-27 kg. An atomic weight unit is the. For these and other reasons, in 1961 the International Union of Pure and Applied Chemistry (IUPAC), which had absorbed the ICAW, adopted a new definition of the atomic mass unit for use in both physics and chemistry; namely, 1/12 of the mass of a carbon-12 atom.
One atomic mass unit is equal to 1/12 the mass of one carbon-12 atom. One atomic mass unit is equal to the mass of one carbon-12 atom.
Atomic Mass Unit to Kilogram Conversion Table
| Atomic Mass Unit [u] | Kilogram [kg] |
|---|---|
| 0.01 u | 1.6605402E-29 kg |
| 0.1 u | 1.6605402E-28 kg |
| 1 u | 1.6605402E-27 kg |
| 2 u | 3.3210804E-27 kg |
| 3 u | 4.9816206E-27 kg |
| 5 u | 8.3027009999999E-27 kg |
| 10 u | 1.6605402E-26 kg |
| 20 u | 3.3210804E-26 kg |
| 50 u | 8.3027009999999E-26 kg |
| 100 u | 1.6605402E-25 kg |
| 1000 u | 1.6605402E-24 kg |
How to Convert Atomic Mass Unit to Kilogram
1 u = 1.6605402E-27 kg
1 kg = 6.0221366516752E+26 u
Example: convert 15 u to kg:
15 u = 15 × 1.6605402E-27 kg = 2.4908103E-26 kg
Popular Weight And Mass Unit Conversions
Convert Atomic Mass Unit to Other Weight and Mass Units
Learning Objectives
- Define atomic mass unit.
- Explain how atomic mass units are determined.
How many gallons of gas can fill a car’s tank?
The current system of measurement in the Unites States is a hodge-podge of different units, many of which are hard to interconvert, unlike the metric system. We at least have standardized units these days, unlike centuries past. At one time, measurements of length often were defined as the distance from the end of one appendage to another. For example, the yard would be defined as the distance from the king’s nose to the tip of his thumb when his arm was stretched out.
Standardized measurements make it possible for people everywhere to get the same amount of something. Note the red and white labels on the gas pump above. These labels certify that the gas pump has been checked and is pumping an accurate gallon of gas. Standard measurements in science are very important so that we can compare experimental data from one lab to another and make sure we all are talking about the same thing.
One Atomic Mass Unit Is Equal To Grams
Atomic Mass
Masses of individual atoms are very, very small. Using a modern device called a mass spectrometer, it is possible to measure such minuscule masses. An atom of oxygen-16, for example, has a mass of 2.66 × 10 -23 g. While comparisons of masses measured in grams would have some usefulness, it is far more practical to have a system that will allow us to more easily compare relative atomic masses. Scientists decided on using the carbon-12 nuclide as the reference standard by which all other masses would be compared. By definition, one atom of carbon-12 is assigned a mass of 12 atomic mass units (amu). An atomic mass unit is defined as a mass equal to one twelfth the mass of an atom of carbon-12. The mass of any isotope of any element is expressed in relation to the carbon-12 standard. For example, one atom of helium-4 has a mass of 4.0026 amu. An atom of sulfur-32 has a mass of 31.972 amu.
The carbon-12 atom has six protons and six neutrons in its nucleus for a mass number of 12. Since the nucleus accounts for nearly all of the mass of the atom, a single proton or single neutron has a mass of approximately 1 amu. However, as seen by the helium and sulfur examples, the masses of individual atoms are not whole numbers. This is because an atom’s mass is affected very slightly by the interactions of the various particles within the nucleus, and the small mass of the electron is taken into account.
Summary
- Carbon-12 is the reference for all atomic mass calculations.
- An atomic mass unit is defined as a mass equal to one twelfth the mass of an atom of carbon-12.
- The mass of an atom is affected by the interactions of particles within the nucleus.
One Atomic Mass Unit Is Equal To How Many Grams
Practice
Use the link below to answer the following questions:
- What is the atomic mass unit based on?
- What is another term for atomic mass unit?
- What mistake is in the second paragraph?
Review
- What instrument is used to measure the mass of atoms?
- How much does a single oxygen-16 atom weigh in grams?
- What is the reference standard for atomic mass units?
- How is an atomic mass unit defined?
- Why are the numbers for atomic mass of individual atoms not whole numbers?
Glossary
- atomic mass unit: Abbreviated as “amu.” A mass equal to one twelfth the mass of an atom of carbon-12.
Atomic Units Conversion
References
How To Calculate Atomic Mass Unit
- Derek Jensen (Wikimedia: Tysto). http://commons.wikimedia.org/wiki/File:Gas-pump-Indiana-USA.jpg.