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Lena [83]
3 years ago
11

Which of the following is the best example of a valid hypothesis? A People should eat vegetables. B Children like Jiffy™ peanut

butter better than Skippy™ peanut butter. C If calcium chloride is added to water, then it will lower the temperature at which water freezes. D Bananas are better for you than chocolate.
Chemistry
1 answer:
Yuki888 [10]3 years ago
3 0
C. because all the other ones are opinions
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The​ half-life of a certain tranquilizer in the bloodstream is 5050 hours. how long will it take for the drug to decay to 8686​%
Novosadov [1.4K]
Using the exponential decay model; we calculate "k"
We know that "A" is half of A0
A = A0 e^(k× 5050)
A/A0 = e^(5050k)
0.5 = e^(5055k)
In (0.5) = 5055k 
-0.69315 = 5055k
 k = -0.0001371
To calculate how long it will take to decay to 86% of the original mass
0.86 = e^(-0.0001371t)
In (0.86) = -0.0001371t
-0.150823 = -0.0001371 t
 t = 1100 hours

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<u>Osmosis </u>is the process that describes water moving through a membrane.

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Question 25 pts
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