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Isotopes
Page 5
Questions (317)
Chlorine has two isotopes with mass number 35 and 37. Calculate the relative abundance of the two isotopes accounting for normal
3 answers
asked by
Iyana
691 views
The atomic mass of chlorine is listed as 35.454 amu on the periodic table. It has two naturally occurring isotopes, CI-35 and
2 answers
asked by
Sara
664 views
I've exhausted possibilities to find an isotope that has 42 protons and 44 neutrons; does one exist? Molybdenum has 42 protons
2 answers
asked by
Nathan
643 views
A hypothetical pure element consists entirely of two isotopes. The natural percent abun- dance of theisotopewithmass 25.4 uis
2 answers
asked by
chanel
646 views
Naturally occuring boron is 80.20% boron-11 and 19.80% of some other isotopic form of boron. What must be the atomic mass of
4 answers
asked by
Ben
648 views
Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If you begin with 36.6 mg of
3 answers
asked by
fatin
613 views
the element boron has two naturally occurring isotopes with masses of 10.01amu and 11.01amu. What is the percent abundance of
3 answers
asked by
Anonymous
649 views
Different isotopes of the same element have different numbers of what ????
3 answers
asked by
Logan
616 views
me again!
got a question that really is trying! the isotope of ununhexium Uuh and it undergoes a succession of seven a-decay
1 answer
asked by
bertie
622 views
An element consists of two isotopes of mass 36.4681 and 43.59612 amu. If the average atomic mass of the element is 40.741 amu,
2 answers
asked by
Lily
630 views
Element L has an average atomic mass of 54.2488 amu and is composed of two isotopes. The first has a mass of 55.2036 amu and
2 answers
asked by
Star
629 views
please help
1.What effect do isotopes of a given element have on the atomic mass calculated for that element? 2. Name two
2 answers
asked by
Anonymous
618 views
(b) If the natural abundance of Ag-107 is 51.84%, what is the natural abundance of Ag-109?
Thanks
3 answers
asked by
Rebekah
609 views
Situation:
You have 100ml of isotopically labelled water 3H2o. That is, the water is made with the radioactive isotope of
3 answers
asked by
Lila
601 views
iron has three main naturally occuring isotopes which can be investigated using a mass spectrometer. The first stage in the
2 answers
asked by
Anonymous
591 views
An element with relative atomic mass 20.8 is found to contain 2 isotopes having a relative atomic mass of 20 and 21.Find the %
3 answers
asked by
Luc
582 views
When is an isotope considered stable?
_(Select all that apply.)_ The isotope does not emit a form of radiation. The isotope’s
2 answers
asked by
Quinn
598 views
Naturally occurring cobalt consists of only one isotope, cobalt59, whose relative atomic mass is 58.9332. A synthetic
2 answers
asked by
Aidan
597 views
suppose that an isotope of uninhexium Uuh under goes a succession of seven a
-decay reactions what isotope would be the final
1 answer
asked by
JILL
591 views
I am supposed to find the percent abundancies of two isotopes. I am given the masses of both isotopes, along with the atomic
2 answers
asked by
Liz
606 views
Bromine has two naturally occurring isotopes, the first of which is 79Br with a mass of 78.904 amu
and an abundance of 50.54%.
2 answers
asked by
Louise
587 views
An element consists of 1.40% of an isotope with mass 203.973 amu, 24.10% of an isotope with mass 205.9745 amu, 22.10% of an
3 answers
asked by
Caleb
597 views
Compared to atoms of the same element, isotopes have different
A. numbers of neutrons. B. numbers of protons. (C. types of
2 answers
asked by
Garrett
579 views
An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative
2 answers
asked by
Ashley
597 views
An unknown element Q has two known isotopes: 61Q and 62Q. If the average atomic mass is 61.4 amu, what are the relative
2 answers
asked by
Sam
566 views
The atomic mass of CU 63 is 62.9296 amu with a natural abudance of 0.692. The average mass of copper is 63.546amu.What is the
2 answers
asked by
Charles
561 views
An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 62.0 amu, what are the relative
2 answers
asked by
Jean
575 views
Different isotopes of the same element have different numbers of what?
2 answers
asked by
yogabaga
523 views
The element rhenium (Re) has two naturally occurring isotopes, 185Re and 187Re, with an average atomic mass of 186.207 amu.
2 answers
asked by
Lisa
585 views
1.)Two different Isotopes are found to have 2 different cpm with Isotope A having a CPM that is 1.5x that of Isotope B? Which
2 answers
asked by
Connie
552 views
Sorry for posting this again, I don't know if the question was skipped or not, but I was just wondering if I could get some help
1 answer
asked by
Jessica
554 views
One isotope of a metallic element has mass number 10 and has 7 neutrons in the nucleus. It forms an atomic ion having 2
2 answers
asked by
Aaron
544 views
boron-10 has an atomic number of 5. how many neutrons are in this isotope? 0 neutrons, 2 neutrons, 5 neutrons, 10 neutrons.
I say
2 answers
asked by
drew
537 views
before 1900 the activity per mass of atmospheric carbon due to the presence of carbon-14 averaged about 0.255bq/g of carbon 1.
2 answers
asked by
jay
537 views
A sample of bromine containing isotopes bromine-79 and bromine-81 was analyses in a mass spectrometer.
How many peaks
2 answers
asked by
Katy
530 views
A hypothetical element has two main isotopes
with mass numbers of 80 and 83. If 68.00% of the isotopes have a mass number of 80
2 answers
asked by
(:
540 views
What is the same in two isotopes of an element? What is different?
2 answers
asked by
tommy
518 views
before 1900 the activity per mass of atmospheric carbon due to the presence of carbon-14 averaged about 0.255bq/g of carbon 1.
2 answers
asked by
jay
510 views
atoms of the same element with different atomic masses are called
isotopes. I don't do these fill in the blank problems without
1 answer
asked by
alejandra
502 views
The atomic mass of element X is 95.99. It has two isotopes, X-95 and X-96. Which is more abundant?
2 answers
asked by
k
492 views
The isotope, Carbon-14 emits beta radiation and has a half live of 5730 years. How long will it take for the amount of radiation
2 answers
asked by
Alea
484 views
The element X has an atomic mass of 12.80
amu. It is known to have two isotopes 12X and 13X. Which of the following is true about
2 answers
asked by
Dawn
515 views
The two naturally occurring isotopes of copper 63Cu &64Cu have masses 62.2996amu
&64.9278 amu respectively. The atomic mass of
1 answer
asked anonymously
54 views
There are 3 known isotopes of Hydrogen and 3 stable isotopes of oxygen. How many types of water molecules would these produce?
Is
1 answer
asked by
Jessica
514 views
Is copper (Cu) the same as copper64 (Cu64)?
Cu64 is a radioactive isotope of copper. Its half life is 12.8 hours. During the few
1 answer
asked by
naomi
487 views
If the relative atomic mass of two isotopes 35m and 37m is 35.5.calculate the relative abundance of 37m.
2 answers
asked by
Micheal
471 views
What is the heaviest element that has only one isotope and is not radioactive?
2 answers
asked by
Joy
473 views
What is the famous isotope used in archeological dating?
carbon 12 I thought it was carbon 14 yes carbon 14-- made an error But
1 answer
asked by
Schooler
487 views
What are the atomic number (z) mass number (a) and symbols of the carbon isotope with 7 neutrons.
What is and how do I get the
2 answers
asked by
Monique
471 views
How do two isotopes of the same element compare with each other?
A.They have the same number of protons but a different number of
2 answers
asked by
victoria
482 views
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Parent Categories (17)
Atomic Attributes
Atomic Mass
Atomic Structure
Atoms
Atoms and Elements
Chemistry
Elements
Elements and Materials
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Nuclear Science
Periodic table
Radioactive Decay
Radioactivity
Science and Chemistry
Science/Chemistry