A soil has a maximum potential cation exchange capacity of 30 cmolc/kg and has a 50% acid saturation. If you want to decrease the percentage acid saturation to 10%, how many cmolc of calcium would it take to replace the exchangeable acid cations per kg of soil? Assume all the calcium exchanged with aluminum
A) 12 B) 5 C) 30 D) 6 E) 40
D
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As a mother cow prepares for nursing or milking, a hormone called _________________ is released by the pituitary gland into the bloodstream
Fill in the blank(s) with correct word
A 1000-W iron is left on an ironing board with its base exposed to the air at 20°C. The convection heat transfer coefficient between the base surface and the surrounding air is 35?W/m2•K. If the base has an emissivity of 0.6 and a surface area of 0.02 m2, determine the temperature of the base of the iron.
What will be an ideal response?
The air leaving an air conditioner typically has:
A) A low relative humidity with more water in the air. B) A high relative humidity with less water in the air. C) A low relative humidity with less water in the air. D) A high relative humidity with more water in the air.
When gas exerts pressure on its container, the pressure is:
A) Higher on the larger surfaces. B) Higher at corners and converging surfaces. C) Higher near the middle of the container than towards the outside. D) Distributed equally on all surfaces of the container.