that seems very false but I believe its the second one
Here ya go if you need the link we’re I found this answer key https://studylib.net/doc/8708211/exam-2---chemistry
Answer:
Total pressure increased
Explanation:
When gas C is added in the vessel then number of mole increases and number of collision depends on the number of molecules present in the vessel and on adding gas C ,mole also increases hence number of collision increases therefore pressure also increases because number of collision increases.
Total pressure increases.
