Answer: 4) 241kPa
Step-by-step explanation:
Using the formula for general gas equation
P1V1/T1 = P2V2/T2
P = pressure V = volume T = temperature in Kelvin
Since 0°C = 273K
30°C = 30+273 =303K
-25°C = -25+273 = 248K
Given P1=98kPa V1 =750mL T1 = 303K, P2= ? V2 = 250mL T2 = 248K
Substituting into the formula to get P2, we have
98×750/303 = P2×250/248
P2 = 98×750×248/303×250
P2= 18,228,000/75,750
P2= 241kPa.