An open container was monitored and found to have toluene evaporation rate of 0.1 g/min. the ventilation rate is 2.84 m3/min, the temperature is 27 °c, and the pressure is 1 atm. estimate the concentration of toluene vapor in the enclosure and compare it to the tlv of 50 ppm. perform the calculation for a k of 0.1 and 0.5

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.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.