option B open system
because in open system energy and mass can escape from the system or can be added to it.
Answer:
1. decreases
2. inverse proportionality
3. 1 A
Explanation
Just did it
"The pH of a solution is a measure of the concentration of hydrogen ions in the solution. A solution with a high number of hydrogen ions is acidic and has a low pH value. A solution with a high number of hydroxide ions is basic and has a high pH value. The pH scale ranges from 0 to 14, with a pH of 7 being neutral."
- Lumen Learning
Answer:
D.Oxygen has five valence electrons
