Chemistry, 25.05.2021 16:50, Animallover100
Jeffrey wants to lose weight by using caffeine to
help with exercise. He asks himself, "Which
caffeine drink will raise the heart rate the most?"
He tries to test this out by comparing the heart
rates of his neighbors, 3 brothers who are
triplets. One of the brothers drinks Pepsi,
another drinks a double shot of espresso (which
is coffee with twice the normal amount of
caffeine) and a third brother drinks only water for
comparison
Jeffrey finds out that the triplet with the double
shot of espresso had the highest heart rate.
4. What is the independent variable for this experiment?
5. What is the dependent variable for this experiment?
6. Which type of drink can be considered the control group? The pepsi, espresso, or water?
7 Write down 3 constants that all 3 brothers should be doing the same for this experiment?
Answers: 1
Chemistry, 22.06.2019 03:00, Dkhaurithompson
Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture
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Compare and contrast physical changes with chemical changes.
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Jeffrey wants to lose weight by using caffeine to
help with exercise. He asks himself, "Which
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