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Atomic Mass

Atomic mass is the mass of protons, neutrons, and electrons in a single specific atom.

1,750 Questions

What the atomic mass of cadmium?

Well, darling, the atomic mass of cadmium is approximately 112.411 u. But really, who's counting? Just remember, it's all about those protons and neutrons doing their little atomic dance.

What is the approximate atomic mass of an atom if its mass is 12 times that of carbon-12?

If the mass of an atom is 12 times that of carbon-12, then its approximate atomic mass can be calculated by multiplying the atomic mass of carbon-12 by 12.

The atomic mass of carbon-12 is exactly 12 atomic mass units (amu).

So, the approximate atomic mass of the atom is:

12

×

12

=

144

 amu

12×12=144 amu

Therefore, the atom's approximate atomic mass is 144 atomic mass units.

What is the atomic mass the same as?

The Atomic Mass is equal to the number of protons and electrons that an element has.

What is thorium's atomic mass?

The atomic weight (not mass !) of thorium is 232,0381.

What is nobelium's atomic mass?

After IUPAC tables (2oo9) the atomic weight of nobelium is [259].

What is the mass of a pear in grams?

Well, honey, the mass of a pear can vary depending on its size, but on average, a medium-sized pear typically weighs around 166 grams. So, if you're looking to weigh that juicy fruit on a scale, you can expect it to be around that ballpark. Just don't forget to subtract the weight of the stem if you're getting technical!

Should you use atomic number or atomic mass number for electronic configuration?

You should use atomic number for electronic configuration. Atomic number represents the number of protons in an atom, which determines the element's identity and the number of electrons it typically has. Atomic mass number is the sum of protons and neutrons, which is useful for determining the mass of an atom but not for electronic configuration.

How do scientists determine the atomic mass of an atom?

Scientists determine the atomic mass of an atom by averaging the masses of all the isotopes of that element, weighted by their abundances. This information can be obtained from mass spectrometry data and is used to calculate the weighted average mass. The atomic mass is typically reported in atomic mass units (amu).

What were the benefits of developing the measurement atomic mass unit?

Developing the atomic mass unit allowed for a standardized method of measuring atomic masses, providing a more precise and consistent way to compare the masses of different atoms. This was crucial for advancements in chemistry and physics, leading to a better understanding of atomic structures and the development of the periodic table.

What unit is used to meause weighted average atomic mass?

The unit used to measure weighted average atomic mass is atomic mass unit (amu). This unit is a standard for atomic and molecular mass measurements in chemistry and is defined as one twelfth of the mass of an atom of carbon-12.

What caused the atomic age?

The atomic age was primarily caused by the development and use of nuclear weapons, starting with the atomic bombings of Hiroshima and Nagasaki in 1945. The Manhattan Project, a research and development program during World War II, led to the creation of the first atomic bombs, marking the beginning of the atomic age.

What is the atomic mass of krypton 92?

The atomic mass of krypton-92 is approximately 91.91 grams per mole.

How many atoms are in 1 atomic mass unit of hydrogen?

Atomic mass unit is a unit of mass for all chemical elements, not only for hydrogen.

The atomic weight of hydrogen is [1,00784; 1,00811]; the conventional atomic weight is 1,008.

1 atom is equal to 1 amu.

Why does 10 gram of nitrogen gas contain the same number of molecules as 10 gram of carbonmonoxide?

Both nitrogen gas and carbon monoxide have the same molecular weight, around 28 grams per mole. Therefore, 10 grams of each substance contain approximately one-third of a mole of molecules. Since Avogadro's number (6.022 x 10^23) represents the number of molecules in one mole of a substance, both 10 grams of nitrogen gas and 10 grams of carbon monoxide contain the same number of molecules, which is roughly 2 x 10^23.

What element has a 27 atomic mass?

The element with an atomic mass of 27 is cobalt (Co). Cobalt is a transition metal found in the periodic table with atomic number 27.

What is the atomic mass of the isotopes of clorine?

The atomic mass of the isotopes of chlorine are as follows:

  • Chlorine-35 has an atomic mass of approximately 35.5 amu
  • Chlorine-37 has an atomic mass of approximately 37.5 amu.

Why was basis of classification of element in the periodic table changed from atomic mass to atomic number?

The basis of classification was changed from atomic mass to atomic number because atomic number (the number of protons in the nucleus) is a more fundamental property of an element than atomic mass. It led to a more accurate arrangement of elements in the periodic table and helped to explain periodic trends and properties in a clearer manner. Additionally, it resolved anomalies like the incorrect order of certain elements based on atomic mass.