Question

The solubility limit of urea is 651 lbs. per 100 gallons. For a 500 gallon mix of spray solution, how how much is the maximum amount of urea that you can add to the 500 gallons of water before you run the risk of the urea not dissolving correctly in the solution? a) up to 130 lbs. Ob) up to 650 lbs. O c) up to 3200 lbs. Question 45 (1 point) Which of the following is true of an inversion? a) A warm layer of air is trapped under a cold layer b) Warm and cold layers of air are mixed together c) A cold layer of air is trapped under a warm layer

Answer 1

Urea is soluble in water ,glycerol,ethanol.gallon is a unit of measurnment in us,one us gallon is defined as 3.7854litres,500 gallon of water takes up to 3200lbs of urea.     45.answer is c, a cold layer of water is trapped under a hot air or we can also say that inversion of temperature occours when a less dense warm air moves over the dense cold air.