Answer:
72.22 g
Explanation:
975 mL Mercury× 13.5 g/mL = 72.22 g
D. A salt e.g NaCl is held by ionic bond
Answer:
300K
Explanation:
Given pressure of the system decreased by 10 times which means 
Given the volume of the system increased by 5 times which means 
Given final temperature 
Let the initial temperature be 
We know that PV=nRT
As n and R are constant 



T1=300K