- #1
Matthias32
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Okay, I've got this problem in my Chemistry class. It's about half-lifes and all that. If this is the wrong place to post this, then somebody can move it I guess.
I've got a 10.0 g sample of an unknown. They give me the following info, wanting me to plot it on a graph. That's the easy part.
Time(yr)---------------Mass(g)
0----------------------10.0
20---------------------6.50
39---------------------3.80
60---------------------2.20
80---------------------1.20
100--------------------0.500
So I graphed it, but now they want me to locate the time when the mass is 5.00 g. Of course, this is the half-life. But how to find it...?
Then I need to check again at 2.50 g, but I can handle that part if I can just get some help on the 5 grams part. Thanks.
Matthias
I've got a 10.0 g sample of an unknown. They give me the following info, wanting me to plot it on a graph. That's the easy part.
Time(yr)---------------Mass(g)
0----------------------10.0
20---------------------6.50
39---------------------3.80
60---------------------2.20
80---------------------1.20
100--------------------0.500
So I graphed it, but now they want me to locate the time when the mass is 5.00 g. Of course, this is the half-life. But how to find it...?
Then I need to check again at 2.50 g, but I can handle that part if I can just get some help on the 5 grams part. Thanks.
Matthias
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