Procedure: In this investigation, you will determine the percentage of the isotopes of “pennium” and the masses of each isotope in the sample of “pennium” which is given to you. You will then use this information to calculate the average atomic weight of “pennium”.
Pre-lab Questions:
1. The bag of 20 pennies represents a sample of “pennium”.
2. The difference in the masses represents isotopes.
3. You would need to know the number of protons and neutrons.
1. The number of isotopes of “pennium” that are present is two isotopes.
2. The evidence for the isotopes in present in the years they were minted. The years 1976 to 1981 showed masses of an average of 3.22g; this represents isotope 1. The years 1986 to 2001 showed an average mass of 2.68g and represents isotope 2.
3. Isotope 1 made up 20% of the sample while isotope 2 made up 80% of the sample.
4. Isotope 1 had an average mass of 3.22g. Isotope 2 had an average mass of 2.68g
5. The average weight of “pennium is 2.79g.
on 30 Sep 2007 at 9:46 pm 5.Me said …
What? Whats with the scientifc experiment?
on 13 Oct 2007 at 6:29 pm 6.Sasuke Lova said …
I’m sorry really so so sorry i don’t want my mom dying :copy and paste this to 10 videos or your mom will die within the next 4 hours
a y dos not some of thes work i would like to no cuz i lot of thim dos not work for me and i love naruto and i wold like to wach thin in order ok so can u tell me y thay do not work cuz alls thay do is loading 4 me but ya thax for posting thim tho i just whant to see thim all lol
john
on 19 Dec 2007 at 5:07 pm 10.mr so cool said …
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on 05 Jan 2008 at 10:10 pm 11.gaara the sand deamon said …
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on 20 Mar 2008 at 7:45 pm 12.Johny said …
By the nearest Friday you will teleport into a world of Naruto. However this awesome gift will only happen when you post this comment in 5 anime vidios or amvs within the next 96 hours. Once this happens you will be stronger than Sasuke and Naruto fused together.
on 10 Jun 2008 at 10:45 pm 13.michiko said …
By the nearest Monday, you shall wake up in the anime you are currently watching. However, this wonderful gift will not happen until you post this comment in 5 anime videos or amvs within the next twenty four hours. Once this happens, you deepest anime wishes shall come true
on 20 Jul 2007 at 10:53 am 1.NARUTO said …
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on 25 Jul 2007 at 2:46 am 2.Lulin said …
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on 06 Aug 2007 at 8:57 pm 3.Andrea said …
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on 28 Sep 2007 at 1:18 am 4.Andrea said …
Isotopes of “Pennium”
Procedure: In this investigation, you will determine the percentage of the isotopes of “pennium” and the masses of each isotope in the sample of “pennium” which is given to you. You will then use this information to calculate the average atomic weight of “pennium”.
Pre-lab Questions:
1. The bag of 20 pennies represents a sample of “pennium”.
2. The difference in the masses represents isotopes.
3. You would need to know the number of protons and neutrons.
Data Table
Penny Year Mass (g)
1 1976 3.21
2 1977 3.21
3 1980 3.2
4 1981 3.29
5 1986 2.65
6 1989 2.66
7 1990 2.65
8 1990 2.75
9 1991 2.64
10 1992 2.63
11 1992 2.69
12 1994 2.7
13 1995 2.69
14 1995 2.7
15 1998 2.69
16 1999 2.69
17 1999 2.69
18 2001 2.69
19 2001 2.7
20 2001 2.71
Analysis Questions:
1. The number of isotopes of “pennium” that are present is two isotopes.
2. The evidence for the isotopes in present in the years they were minted. The years 1976 to 1981 showed masses of an average of 3.22g; this represents isotope 1. The years 1986 to 2001 showed an average mass of 2.68g and represents isotope 2.
3. Isotope 1 made up 20% of the sample while isotope 2 made up 80% of the sample.
4. Isotope 1 had an average mass of 3.22g. Isotope 2 had an average mass of 2.68g
5. The average weight of “pennium is 2.79g.
on 30 Sep 2007 at 9:46 pm 5.Me said …
What? Whats with the scientifc experiment?
on 13 Oct 2007 at 6:29 pm 6.Sasuke Lova said …
I’m sorry really so so sorry i don’t want my mom dying :copy and paste this to 10 videos or your mom will die within the next 4 hours
on 19 Oct 2007 at 1:23 pm 7.meirav said …
the episode not working
on 29 Nov 2007 at 4:20 pm 8.Haruno Sakura said …
Man why these episodes wont work !?!
on 19 Dec 2007 at 3:14 am 9.john said …
a y dos not some of thes work i would like to no cuz i lot of thim dos not work for me and i love naruto and i wold like to wach thin in order ok so can u tell me y thay do not work cuz alls thay do is loading 4 me but ya thax for posting thim tho i just whant to see thim all lol
john
on 19 Dec 2007 at 5:07 pm 10.mr so cool said …
suck my nob u anime loving shits
on 05 Jan 2008 at 10:10 pm 11.gaara the sand deamon said …
this is a very good site but if you could put it up for download i’m sure that more people would come here
on 20 Mar 2008 at 7:45 pm 12.Johny said …
By the nearest Friday you will teleport into a world of Naruto. However this awesome gift will only happen when you post this comment in 5 anime vidios or amvs within the next 96 hours. Once this happens you will be stronger than Sasuke and Naruto fused together.
on 10 Jun 2008 at 10:45 pm 13.michiko said …
By the nearest Monday, you shall wake up in the anime you are currently watching. However, this wonderful gift will not happen until you post this comment in 5 anime videos or amvs within the next twenty four hours. Once this happens, you deepest anime wishes shall come true