Agas sample at 45 c has a pressure of 123 kpa. if the gas is cooled to 30 c, what is the new pressure?

= 127.06 kPa

Explanation:

According to pressure law which states that the pressure of a fixed mass of a gas is directly proportional to its absolute temperature at constant volume.

Therefore;

P1/T1 = P2/T2

P1 = 123 kPa

T1 = 30°C + 273°C = 303 K

T2= 40°C + 273°C = 313 K

Therefore;

P2 = P1T2/T1

   = (123 × 313)/303

   = 127.06 kPa

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.