Asample of gas with a volume of 750 ml exerts a pressure of 98 kpa at 30◦c. what pressure will the sample exert when it is compressed to 250 ml and cooled to −25◦c?
1. 26.7 kpa
2. 359 kpa
3. 353 kpa
4. 241 kpa
5. 39.9 kpa

4) 241kPa

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.

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer