Ch.2 - Atoms & ElementsSee all chapters
Isotopes
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| Mole Concept | 37 mins | 0 completed | Learn Summary |
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| Calculating Molar Mass |
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Solution: The element X has three naturally occuring isotopes; aX, bX, and cX, where a, b, and c represent the mass number. The masses (amu),except aX, and the percent abundances of the isotopes are given in the table below. The average atomic mass of X is 17.20 amu. What is the mass of aX in amu?
a. 16.60
b. 16.67
c. 19.01
d. 18.11
e. 9.99
Problem
The element X has three naturally occuring isotopes; aX, bX, and cX, where a, b, and c represent the mass number. The masses (amu),except aX, and the percent abundances of the isotopes are given in the table below. The average atomic mass of X is 17.20 amu. What is the mass of aX in amu?
a. 16.60
b. 16.67
c. 19.01
d. 18.11
e. 9.99
Practice Problems
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Gallium is a metal with a wide variety of uses (e....
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An unknown element E is found to have two isotopes...
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I....
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Fill in the blank spaces and write out all the sym...
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Write isotopic symbols of the form AzX for each i...
Write isotopic symbols of the form AzX for each i...
Write isotopic symbols of the form AzX for each i...
Write isotopic symbols of the form AzX for each i...
An unknown element, X, has three naturally occurri...
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Which box below represent isotopes of each other (...
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Fill in the requested information.
a) How many pr...
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Determine the number of protons, neutrons and elec...
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Gallium has two naturally occurring isotopes, 69Ga...
In which pair are the two species both isoelectro...
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The atomic masses in the periodic table are not in...
Which of the following statements about isotopes i...
Suppose the element Z contains only two isotopes, ...
A naturally occurring sample of an element contain...
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Calculate the atomic mass of silver if silver has ...
Conventional breeder reactors (oxymoron?) make mor...
The element X has three naturally occuring isotope...
The atomic masses of 6Li and 7Li are 6.0151 amu an...
You may want to reference (Pages 50 - 52) Section ...
You may want to reference (Pages 50 - 52) Section ...
You may want to reference (Pages 50 - 52) Section ...
You may want to reference (Pages 50 - 52) Section ...
You may want to reference (Pages 50 - 52) Section ...
You may want to reference (Pages 50 - 52) Section ...
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You may want to reference (Page 58) Section 2.6 wh...
The nucleus of 6Li is a powerful absorber of neutr...
The nucleus of 6Li is a powerful absorber of neutr...
The nucleus of 6Li is a powerful absorber of neutr...
The nucleus of 6Li is a powerful absorber of neutr...
The natural abundance of 3 He
is 0.000137 %.How ma...
Determine the number of protons and neutrons in ea...
Determine the number of protons and neutrons in ea...
Determine the number of protons and neutrons in ea...
Determine the number of protons and neutrons in ea...
The amount of carbon-14 in artifacts and fossils i...
Hydrogen has three isotopes (1H, 2H, and 3H), and ...
Hydrogen has three isotopes (1H, 2H, and 3H), and ...
Hydrogen has three isotopes (1H, 2H, and 3H), and ...
Hydrogen has three isotopes (1H, 2H, and 3H), and ...
Hydrogen has three isotopes (1H, 2H, and 3H), and ...
Hydrogen has three isotopes (1H, 2H, and 3H), and ...
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Gallium (Ga) consists of two naturally occurring i...
The first atoms of seaborgium (Sg) were identified...
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The radioactive isotope cesium-137 was produced in...
Write symbols for the following isotopes.Radon-220
Write symbols for the following isotopes.Polonium-...
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Write symbols for the following isotopes.Z = 58 an...
Write symbols for the following isotopes.Z = 27 an...
Write the correct symbol, with both superscript an...
Write the correct symbol, with both superscript an...
Write the correct symbol, with both superscript an...
Write the correct symbol, with both superscript an...
An isotope of an element contains 82 protons and 1...
Uranium-235 is used in nuclear fission.
You may ...
Enter isotopic symbols of the form X-A (e.g., C-13...
Enter isotopic symbols of the form X-A (e.g., C-13...
Enter isotopic symbols of the form X-A (e.g., C-13...
Enter isotopic symbols of the form X-A (e.g., C-13...
You may want to reference (Pages 56 - 61) Section ...
Write isotopic symbols of the form ZA X for each i...
Write isotopic symbols of the form ZA X for each i...
Write isotopic symbols of the form ZA X for each i...
Write isotopic symbols of the form ZA X for each i...
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The element oxygen has three naturally occurring i...
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Element X is toxic to humans in high concentration...
Copper metal has two naturally occurring isotopes:...
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Rubidium has two naturally occurring isotopes, rub...
Naturally occurring magnesium has the following is...
The following diagram is a representation of 20 at...
Naturally occurring chlorine is composed of two is...
Silver is composed of two naturally occurring isot...
Below is a representation of 50 atoms of a fictiti...
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A 6.18 g sample of copper is contaminated with an...
Naturally occurring magnesium has an atomic mass o...
Lithium has two naturally occurring isotopes: Li-6...
A naturally occurring sample of an element contain...
The nucleus of 6Li is a powerful absorber of neutr...
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Naturally occurring silver consists of two isotope...
Magnesium has three naturally occurring isotopes: ...
Gallium has two naturally occurring isotopes with ...
Carbon has two naturally occurring isotopes:
C-12 ...
Silicon has three naturally occurring isotopes...
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You may want to reference (Pages 66 - 69) Section ...
You may want to reference (Pages 66 - 69) Section ...
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is 0.000137 %.Based ...
In a naturally occurring sample, 19.8% of boron at...
In a naturally occurring sample, 19.8% of boron at...
In a naturally occurring sample, 19.8% of boron at...
In a naturally occurring sample, 19.8% of boron at...
Germanium has five naturally occurring isotopes: 7...
The element lead (Pb) consists of four naturally o...
Magnesium has three naturally occurring isotopes w...
An element has two naturally occurring isotopes. I...
An element has two naturally occurring isotopes. I...
You may want to reference (Pages 66 - 69) Section ...
Copper has two naturally occurring isotopes, inclu...
Sulfur has four naturally occurring isotopes, incl...
You may want to reference (Pages 53 - 54) Section ...
One way in which Earths evolution as a planet can ...
One way in which Earths evolution as a planet can ...
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You may want to reference (Pages 53 - 54)Atomic We...
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The mole is defined as the amount of a substance c...
The subscript giving the atomic number of an atom ...
The explosion of an atomic bomb releases many radi...
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What is percent natural abundance?
Describe the two different notations used to speci...
In complete sentences, describe the similarities a...
Hydrogen has three isotopes (1H, 2H, and 3H), and ...
The element oxygen has three naturally occurring i...
The atomic mass of copper is 63.546 amu.Do any cop...
Boron has only two naturally occurring isotopes. T...
Boron has only two naturally occurring isotopes. T...
The following diagram is a representation of 20 at...
Lithium has only two naturally occurring isotopes....
Naturally occurring chlorine is composed of two is...
Below is a representation of 50 atoms of a fictiti...
Below is a representation of 50 atoms of a fictiti...
Below is a representation of 50 atoms of a fictiti...
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A sample of naturally occurring silicon consists o...
Lithium has two naturally occurring isotopes: Li-6...
Carbon has two naturally occurring isotopes: C-12 ...
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Gallium has two naturally occurring isotopes: gall...
Gallium has two naturally occurring isotopes: gall...
Gallium has two naturally occurring isotopes: gall...
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Rank from highest to lowest molecular mass:D216O17...
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I: 321...
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Name the element and determine the number of proto...
Name the element and determine the number of proto...
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Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
Give the number of protons, electrons, and neutron...
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Write the atomic symbol for each of the following...
Write the atomic symbol for each of the following...
Write the atomic symbol for each of the following...
Write the atomic symbol for each of the following...
Write the atomic symbol for each of the following...
Write the atomic symbol for each of the following...
Write the atomic symbol for each of the isotopes ...
Write the atomic symbol for each of the isotopes ...
Write the atomic symbol for each of the isotopes ...
Write the atomic symbol for each of the isotopes ...
Write a symbol for each of the following neutral i...
Write the atomic symbol for each of the isotopes ...
Write a symbol for each of the following neutral i...
Write a symbol for each of the following neutral i...
Write the atomic symbol for each of the isotopes ...
Write a symbol for each of the following neutral i...
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An element “X” has five major isotopes, which are ...
The element rhenium (Re) has two naturally occurri...
Assume silicon has three major isotopes in nature ...
Gallium has two naturally occurring isotopes, 69Ga...
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On another planet, the isotopes of titanium have t...
The element europium exists in nature as two isoto...
Chlorine has two naturally occurring isotopes, 35C...
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Antimony has many uses, for example, in infrared d...
The average atomic masses of some elements may var...
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