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Recent questions in Atomic Mass
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Neon has two major isotopes, -20 and neon -22. What’s the atomic mass of 22Ne isotope if the Atomic mass and percentage abundance of 20Ne in 19.992 amu and 90% respectively?
asked
May 18, 2023
in
Atomic Mass
by
Rocco1405
+37
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Why is gram atomic mass of an element equal to 6.023 ×10^23 atoms?
asked
May 18, 2023
in
Atomic Mass
by
nmlyons31
+67
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What is atomic weight?
asked
May 18, 2023
in
Atomic Mass
by
BlazeHarmony
+19
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Why are atomic masses of most of the elements fractional?
asked
May 18, 2023
in
Atomic Mass
by
Chesterflaps
+172
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What has a mass of 1 amu?
asked
May 17, 2023
in
Atomic Mass
by
gadget man
+9
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What changes in the atomic number and mass number occur in positron emission?
asked
May 17, 2023
in
Atomic Mass
by
JulesF321
+28
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Do c-12 and c-14 have same atomic mass?
asked
May 17, 2023
in
Atomic Mass
by
ripitout
+186
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Why was oxygen selected as the standard reference for atomic mass?
asked
May 17, 2023
in
Atomic Mass
by
mr bodgit
+7
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What are some examples of inert elements and their symbols and atomic masses?
asked
May 17, 2023
in
Atomic Mass
by
CelestialScribe
+20
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Why is the sequence of the periodic table on the basis of atomic mass rejected?
asked
May 17, 2023
in
Atomic Mass
by
Seismic gunner
+3
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What is the atomic mass of fluorine?
asked
May 17, 2023
in
Atomic Mass
by
AstralMystic
+23
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What is an example in the periodic table where the elements are not in order of their relative atomic weight?
asked
May 16, 2023
in
Atomic Mass
by
bilco
(
1.7k
points)
+16
votes
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answers
The average atomic mass of copper is 63.546 amu. Copper has two naturally occurring isotopes. Cu-63 has an atomic mass of 62.9296 amu, and an abundance of 69.15%. What is the atomic mass of the second isotope?
asked
May 16, 2023
in
Atomic Mass
by
Kevin Keelan
+23
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How would one calculate the number of O-atoms and its mass in 5g of calcium carbonate?
asked
May 16, 2023
in
Atomic Mass
by
Sparks.
(
2.4k
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+5
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What is atomic mass and relative atomic mass?
asked
May 16, 2023
in
Atomic Mass
by
SrewcFix
+264
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How do I find the mass of an isotope?
asked
May 16, 2023
in
Atomic Mass
by
StellarEnigma
+26
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Why are the atomic masses on the periodic table not expressed as whole numbers like the mass number of an element?
asked
May 16, 2023
in
Atomic Mass
by
Chris1004
+14
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A mystery element has three isotopes of the following masses and percent abundance: 144.288 amu at 28.27% abundance, 143.66 amu at 39% abundance, and 149.907 amu. What is the exact atomic mass of the mystery element?
asked
May 16, 2023
in
Atomic Mass
by
JusticeEmpire
+119
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Can we say that the atomic weight is directly proportional to the (Z)?
asked
May 15, 2023
in
Atomic Mass
by
John77H
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3.4k
points)
+13
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How would one calculate the gram atoms in 23g of sodium if the atomic mass is 23g mol-1?
asked
May 15, 2023
in
Atomic Mass
by
Divecomuk
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