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Atomic Mass Number
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The weights of all elements are always compared to oxygen. True False?
True. In chemistry, the weights of all elements are often compared to oxygen, specifically the isotope oxygen-16, which is used as a standard reference point for calculating atomic weights. This practice allows for a consistent and relative comparison of the masses of different elements.
What elements did John Dalton discover the atomic weights of?
John Dalton determined the atomic weights of several elements, including hydrogen, oxygen, carbon, nitrogen, and sulfur, among others. He used hydrogen as the reference point with an atomic weight of 1, assigning relative weights to other elements based on their combinations with hydrogen. Dalton's work laid the foundation for the modern understanding of atomic theory and the relative weights of elements. His findings were crucial in advancing the field of chemistry in the early 19th century.
What is the abbreviation for the atomic mass unit?
The abbreviation for atomic mass unit is amu, which stands for atomic mass unit. It is a unit of mass used to express atomic and molecular weights.
Why is the periodic table arranged in order atomic weight?
The periodic table is arranged in order of atomic number, not atomic weight. This is because the properties of elements are determined by the number of protons in the nucleus, which is the atomic number. Atomic weight is not used because it can vary due to isotopes of an element.
What does amu satand for?
AMU stands for atomic mass unit. It is a unit of mass used to express atomic and molecular weights. 1 atomic mass unit is defined as one twelfth of the mass of an atom of carbon-12.
Base weight a system of comparing atomic weights to carbon is it true or false?
True. The unit for the atomic weights of chemical elements is the relative atomic mass unit (1/12 from the atomic mass of the isotope 12C). Note that atomic weights is used for elements and atomic mass for isotopes.
The acronym amu stands for?
Atomic mass unit (amu) is a unit of mass used to express atomic and molecular weights.
What does an atomic mass unit measure?
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.
What elements did John Dalton discover the atomic weights of?
John Dalton determined the atomic weights of several elements, including hydrogen, oxygen, carbon, nitrogen, and sulfur, among others. He used hydrogen as the reference point with an atomic weight of 1, assigning relative weights to other elements based on their combinations with hydrogen. Dalton's work laid the foundation for the modern understanding of atomic theory and the relative weights of elements. His findings were crucial in advancing the field of chemistry in the early 19th century.
What is the abbreviation for the atomic mass unit?
The abbreviation for atomic mass unit is amu, which stands for atomic mass unit. It is a unit of mass used to express atomic and molecular weights.
Do you use waits in yoga?
WEIGHTS are often used in Hatha Yoga
Why is the periodic table arranged in order atomic weight?
The periodic table is arranged in order of atomic number, not atomic weight. This is because the properties of elements are determined by the number of protons in the nucleus, which is the atomic number. Atomic weight is not used because it can vary due to isotopes of an element.
What does amu satand for?
AMU stands for atomic mass unit. It is a unit of mass used to express atomic and molecular weights. 1 atomic mass unit is defined as one twelfth of the mass of an atom of carbon-12.
What inert metal is often used in electrodes and has an atomic number of 78?
The inert metal often used in electrodes with an atomic number of 78 is gold (Au).
How do you figure the atomic mass of element when you have electrons?
The term atomic mass is used only for isotopes; for chemical elements the term atomic weight is recommended.But atomic masses and atomic weights include also all electrons.
What is the mass of a single atom of xenon in amu?
The atomic mass unit (amu) is a unit of mass used to express atomic and molecular weights. The atomic mass of a single atom of xenon is approximately 131.29 amu.
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