Answer:
= 36.185 °C
Explanation:
Using the combined gas law;
P1V1/T1 = P2V2/T2
In this case;
P1 = 0.87 atm
V1 = 6.0 cm³
T1 = ?
P2 = 0.52 atm
V2 = 10 cm³
T2 = 35 °C + 273 = 308 K
Therefore;
T1 = P1V1T2/P2V2
= ( 0.87 × 6.0 × 308)/( 0.52 ×10)
= 309.185 K
Therefore; Initial temperature = 309.185 K - 273 = 36.185 °C