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Atomic Mass
Atomic mass is the mass of protons, neutrons, and electrons in a single specific atom.
1,752 Questions
What has a mass of 1.67495x10?
You left out part of this statement. One neutron has a mass of 1.67495x10^-24g.
What is the gram atomic mass for the element Nb?
The gram atomic mass of niobium (Nb) is approximately 92.91 grams per mole.
What does the atomic mass and number tell you about an atom?
The atomic weight (not mass) of a chemical element is the ratio between the average mass of the atoms of this element to 1/12 from the Atomic Mass of carbon-12.
The atomic mass is a term applied only to specific isotopes; the unit is the same as above. Is a value denoting the total mass of all the protons, neutrons, and electrons in an isotope.
The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.
The atomic number, on the other hand, tells us how many protons are in the nucleus of an atom.
IUPAC publish periodically tables of atomic weights - the last edition is from 2009-2010.
For the atomic masses of isotopes the last published edition is The AME 2003 atomic mass evaluation, edited by Audi, Wapstra and Thibault.
The mass of a die depends on what it is made of and how big it is. The mass of dice also depends on how many there are.
This is a consequence of the law of periodicity of chemical elements.
What is the mass of a gluestick?
The mass of a typical glue stick ranges from about 20 to 40 grams, depending on its size and brand. Smaller glue sticks may weigh closer to 20 grams, while larger or specialized types can weigh up to 40 grams or more. Always check the packaging for the exact weight of a specific product.
The number of protons identifies this element as aluminum, which has an atomic number of 13. The number of protons is an element's atomic number on the periodic table. Every element has its own unique atomic number which defines it as that element.
What is the mass in grams of 1.72 1023 molecules of aspirin C9H8O4?
[1.72*10+23(molecules)] * [180.157 g.mol-1] / [6.02214129*10+23(molecules.mol−1]
= 51.45 g C9H8O4
What is the nearest whole number of atomic mass of potassium?
The nearest Whole number of atomic mass of potassium is 69
How do you calculate a weighted average such as the atomic mass of boron?
Usually, the weight of an atom would be about twice that of the atomic number. For example, Boron's atomic number is 5, and it has an atomic mass 0f 10.81 amu. This is because of the fact that a neutron and a proton both weight about 1 amu, and an electron is insignificant. To calculate the atomic weight to a higher accuracy than a mere estimate, is beyond me. I hope this helped.
== The equation of atomic mass is protons+nuetrons== atomic mass. ===
Do all lithium atoms have the same mass?
No. There are different isotopes of lithium which have different numbers of neutrons and thus different masses. There are two stable isotopes of lithium: Lithium-6 with 3 neutrons and Lithium-7 with 4 neutrons.
How are the elements arranged by atomic mass?
They are NOT normally arranged by atomic mass; instead they are arranged in the periodic table by their atomic number. The latter is the number of protons (or electrons) in a single atom of the element and it is a constant for the element. The atomic mass is an average of the isotopes of the element (in proportion to their abundance).
While the atomic number is always an integer, increases in steps of 1 and elements that are a specific "distances" apart share similar chemical characteristic. On the other hand the atomic mass is rarely an integer, and occasionally it reverses the order laid out be the periodic table: for example, element 18, argon has an atomic mass of 39.948 which is greater than that of element 19, potassium with a mass of 39.098: this is because the predominant isotope of argon has 22 neutrons while that for potassium has 20 neutrons.
What properties are very similar to changium but has almost twice its atomic mass?
Changium is a flower not a chemical element.
Why is the krypton atomic mass not determined?
The relative atomic mass is 83.798. So where did you get that it is not determined.
