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The half-life of an element is 100 years. If a 40 gram sample was originally deposited, how much is left after 200 years? Question 3 options: 10 grams 20 grams 40 grams 80 grams WILL GIVE 100 POINTS!!!
answered
Apr 5, 2018
Chemistry
middle-school
1
vote
132k
views
Flowcharting clarifies what needs to happen in a process. t or f
answered
Mar 9, 2018
English
college
2
votes
78.4k
views
Can someone tell me how to find out the area of a parallelogram?
answered
Jan 22, 2018
Mathematics
middle-school
2
votes
112k
views
What is Peter's line before 'how do you turn a phrase?' In an episode of family guy
answered
Sep 30, 2017
English
high-school
7
votes
16.5k
views
What was the effect of the industrial revolution
answered
Jun 29, 2016
Social Studies
middle-school
4
votes
125k
views
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