Answer:
6 atm
Explanation:
Using the formula P1V1=P2V2
P1= Initial Pressure
V1= Initial Volume
P2= Final Pressure
V2= Final Volume
And knowing that at stp gas will always be at 1 atm
250L(P2) = 1500
P2= 6 atm
Here are some examples:-
Water → water vapour
bromine → bromine gas
See below
Each metal oxide reacts with HCl to form water and the metal chloride