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What are the steps in the process of calculating average in atomic mass given data about the isotopes of an element?
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As an element occurs as a mixture of naturally occurring isotopes what is the atomic mass of the element based upon?
The atomic mass of an element is based upon the weighted average of the atomic masses of the naturally occurring isotopes of that element. We need to know what isotopes of a given element occur in nature, and what percentage of the natural abundance of an element each of those naturally occurring isotopes represents. What that means might be more easily seen if we just run through some examples. So let's run through some.We have an element with 3 naturally occurring isotopes. They occur equally. That is, each one represents a third of the natural atoms, or 33 1/3 % of them. If the atomic masses of our isotopes are 17, 18 and 19, and all occur equally, then it's 17 + 18 + 19 (which equals 54) divided by 3 which is 54 divided by 3 which is 18. Our atomic mass for the element cited is 18, and that represents all the natural isotopes and the percentage in which they occur. Pretty easy.We have an element with 4 naturally occurring isotopes. Here are their atomic masses and percent abundance: a = 46 (25%), b = 47 (50%), c = 48 (15%), and d = 49 (10%). There is a (fairly) simple process one can use to find the weighted average. Multiply the percent natural abundance times the atomic mass of each one and add them all together. Not to difficult, is it? Roll up your sleeves and let's have at it.46 x 25% = 11.547 x 50% = 23.548 x 15% = 7.249 x 10% = 4.911.5 + 23.5 + 7.2 + 4.9 = 47.1 atomic mass unitsSo now we have our atomic mass for our mystery element in example two. We calculated it by determining a weighted average of the naturally occurring isotopes. And that's very important information to take to the lab where we'll be measuring (weighing) some of this stuff.
Is the decay of unstable isotopes always the same process?
Yes, for the specified isotope; but the process is statistic.
How can radioactive isotopes be ueds as tracers?
Measuring the radioacivity of these isotopes can be tracked the course of a technological process because radioisotopes migrate themselves.
What causes the process of transmutations?
The number of protons in the nucleus changes.
How does isotopes of the same element chemically react?
Although chemistry usually teaches us that isotopes only differ in neutron count and not reactivity, this is not actually the case. An illustration of this can best be seen when analysing isotope abundances versus their distance from the beach. For instance, imagine sea water evaporating. The slightly ligther 1H isotope evaporates faster than the heavier dueterium 2H isotope, hence clouds contain more 1H. As these clouds move inland, the heavier water (2H containing), falls as rain sooner, meaning rain water closer to the sea contains more dueterium. This same principle can be applied to all the elements, and although, strictly speaking isn't a chemical reaction, more of a physical process, you can see that this principle can be applied in certain reactions. so, yes, isotopes do differ in reactivity. Thrutchywaynefish
Why does radioactivity occur in some elements?
It occurs due to the instability of the element. It is a spontaneous process. Radioactive atoms are known as isotopes.
As an element occurs as a mixture of naturally occurring isotopes what is the atomic mass of the element based upon?
The atomic mass of an element is based upon the weighted average of the atomic masses of the naturally occurring isotopes of that element. We need to know what isotopes of a given element occur in nature, and what percentage of the natural abundance of an element each of those naturally occurring isotopes represents. What that means might be more easily seen if we just run through some examples. So let's run through some.We have an element with 3 naturally occurring isotopes. They occur equally. That is, each one represents a third of the natural atoms, or 33 1/3 % of them. If the atomic masses of our isotopes are 17, 18 and 19, and all occur equally, then it's 17 + 18 + 19 (which equals 54) divided by 3 which is 54 divided by 3 which is 18. Our atomic mass for the element cited is 18, and that represents all the natural isotopes and the percentage in which they occur. Pretty easy.We have an element with 4 naturally occurring isotopes. Here are their atomic masses and percent abundance: a = 46 (25%), b = 47 (50%), c = 48 (15%), and d = 49 (10%). There is a (fairly) simple process one can use to find the weighted average. Multiply the percent natural abundance times the atomic mass of each one and add them all together. Not to difficult, is it? Roll up your sleeves and let's have at it.46 x 25% = 11.547 x 50% = 23.548 x 15% = 7.249 x 10% = 4.911.5 + 23.5 + 7.2 + 4.9 = 47.1 atomic mass unitsSo now we have our atomic mass for our mystery element in example two. We calculated it by determining a weighted average of the naturally occurring isotopes. And that's very important information to take to the lab where we'll be measuring (weighing) some of this stuff.
WHAT isotopes are used in this process?
U didn't mention which process
What did radioactivity reveal about the atom?
That some atoms are not stable, and that they release mass from their nuclei to become other isotopes or elements. Until the process of fusion was understood, nuclear decay was the only known way for one element to become another element.
What is an antidifferentiation?
An antidifferentiation is a process of calculating the antiderivative in calculus.
Is the decay of unstable isotopes always the same process?
Yes, for the specified isotope; but the process is statistic.
What isotopes are in this process?
which process & which isotope u mention 1. nuclear reaction U235 & Pu239
Describe what causes contribute to the different masses that atom of the same element has?
There are no causes for different isotopic masses, they are a fact of nature, however - Isotopes,meaning 'same place', on the periodic table are versions of the same element having a differing number of neutrons. Neutrons do not affect the chemical properties of the element but they do affect it's mass. Perhaps the most famous isotopes are Uranium 238 which is stable and U235 which is unstable and naturally decays into Barium and Krypton in a process known as nuclear fission.
How can radioactive isotopes be ueds as tracers?
Measuring the radioacivity of these isotopes can be tracked the course of a technological process because radioisotopes migrate themselves.
What has the author Vicram Prakash Singh written?
Vicram Prakash Singh has written: 'Separation of hydrogen isotopes by a flowing bed process' -- subject(s): Isotopes, Hydrogen, Isotopes separation
What process dates rock and minerals by the radioactivity isotopes they contain?
carbon dating
What causes the process of transmutations?
The number of protons in the nucleus changes.
