Chemistry, 22.01.2021 19:00 eweqwoewoji
A sample of fluorine-18 is found to have an activity of 980 disintegrations per second (dps). After 8.0 hours the activity has decreased to 45 dps. What is the half-life, in years, for the decay of fluorine-18
Answers: 1
Chemistry, 22.06.2019 00:00
How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.
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Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?
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Chemistry, 22.06.2019 15:00
20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?
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A sample of fluorine-18 is found to have an activity of 980 disintegrations per second (dps). After...
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