Question

Question #b59c9

Answer 1

`308`ml(3s.f.)

Explanation:

first, convert `1.50`atm to torr:

`1` atm = `760` torr

`1.5` atm `(p_2)` = `760*1.5` torr = `1140` torr

new pressure `(p_2):`1140# torr

boyle's law: `p` (pressure) * `v` (volume) = constant
`p_1 * v_1 =` constant
`p_2*v_2=` constant

here, the constant is `1140` torr * `250`ml = `285,000`.
`p_2*v_2 = 285,000`

`therefore p_1*v_1 = 285000`

`p_1 = 925` torr

`v_1 = 285000/925` ml = `308` ml (3s.f.)