Answer:
The volume of helium will be 3.80 L
Explanation:
Step 1: Data given
Initial volume of the balloon = 2.68 L
Initial temperature of the balloon = 23°C = 296 K
Final temperature of the balloon = 23°C = 296 K
Initial pressure of the balloon = 789 mmHg
Final pressure of the balloon = 556 mmHg
Step 2: Calculate final volume
(P1*V1)/T1 = (P2V2)/T2
(789 * 2.68)/296 = (556*V2)/296
V2 = (789*2.68)/556
V2 = 3.80 L
The volume of helium will be 3.80 L