-- card: 12846 from stack: in
-- bmap block id: 13209
-- flags: 0000
-- background id: 2723
-- name: 


-- part contents for background part 19
----- text -----
0

-- part contents for background part 17
----- text -----
0

-- part contents for background part 3
----- text -----
Cool the gas sample

-- part contents for background part 4
----- text -----
Remove one of the weights

-- part contents for background part 5
----- text -----
Add more gas molecules

-- part contents for background part 6
----- text -----
Any of the above

-- part contents for background part 1
----- text -----
1

-- part contents for background part 18
----- text -----
CORRECT!