Select the correct answer. Marissa is testing a hypothesis through experimentation. She believes that immersing ocean coral in carbonic acid will slow the coral’s growth. Which of these actions will prevent Marissa from introducing confounding variables into her experiment?
A. She releases cement particles into a random number of the coral samples.
B. She uses three different types of coral to establish her dependent variables.
C. She treats the coral samples identically with varying levels of carbonic acid.
D. She obtains her coral samples from coral reefs surrounding different continents.
Answers: 2
Chemistry, 21.06.2019 20:30
14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->
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Chemistry, 21.06.2019 22:30
Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?
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Chemistry, 22.06.2019 07:00
If there is any 12 to 14 girls that need a boyfriend just follow me and let me know
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Select the correct answer. Marissa is testing a hypothesis through experimentation. She believes tha...
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