This blog is used for direct access from the teacher to the students and their parents. On this blog I have included my calendar for each unit, notes for each chapter, and additional resources, and fun facts for your benefit. Please feel free to comment on it if you have questions about homework or just want to say hello.
Friday, April 24, 2009
Have Questions
If you have questions regarding homework assignments or what to study for on a test, post a comment here and I will be sure to answer it immediately.
I'm kind of stuck on the homework that Chemistry I was given on Friday. 4. the half-life of co-60 is 5.26 years. if 50g are left after 15.8 years, how many grams were in the original sample? How do I find out the answer to that?
Use the problem #5 on the practice worksheet to do the problem. If you have the half life determine how many half-lives are in the fraction (5.26/15.8) and then take the amount left over (50g) divided by the fraction and that will give you the original amount.
I'm kind of stuck on the homework that Chemistry I was given on Friday.
ReplyDelete4. the half-life of co-60 is 5.26 years. if 50g are left after 15.8 years, how many grams were in the original sample?
How do I find out the answer to that?
Use the problem #5 on the practice worksheet to do the problem. If you have the half life determine how many half-lives are in the fraction (5.26/15.8) and then take the amount left over (50g) divided by the fraction and that will give you the original amount.
ReplyDeleteHope this helps.
Thank you verry much. I would have never gotten that on my own.
ReplyDeletehi ms. ruge
ReplyDeletei am wondering why i have an f on the chemthink on gas when i completed it?
chad cline