Dan wants to test the effects of different amounts of antibiotic on bacteria. while setting up his experiment he makes sure to use the same type of antibiotic, the same type of bacteria, and the same type of incubator for each trial. which phrase below best describes this part of the experiment?
a.
analyzing results
b.
collecting data
c.
choosing controlled variables
d.
making a prediction

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What information does a complete ionic equation give that the balanced equation doesn’t show?

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: