The copper burned in the presence of another substance to form the dark coating on the wire what was that other reactant? a. water b. oxygen gas c. copper oxide d. carbon (the answer is not c i already tried this on the test.)

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration