Once a micronutrient ion is introduced into the soil as a chelate, it will remain in that form until taken up by a plant or a microorganism
Indicate whether the statement is true or false
FALSE
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2 kg of saturated liquid water is to be boiled at a constant-pressure of 100 kPa in a piston-cylinder device until the water is all saturated vapor. Determine the work and heat transfer for the process.
Given: Water; m = 2 kg; P = 100 kPa; x1 = 0; x2 = 1.0 Assume: ?KE = ?PE = 0. What will be an ideal response?
All of the following are lime application rate calculations EXCEPT ____
a. cost/lb ENP = (price/ton lime) / lb ENP per t b. tons lime/acre = (3,000 lbs ENP/acre) / (1540 lbs ENP/ton) 2.0 tons lime per acre c. lbs lime/acre = (3,000 lbs/acre) / 77% • 100 3,900 lbs/acre
Weeds compete with crops for materials essential to growth
Indicate whether the statement is true or false
In order to leak test a low pressure chiller, the chiller pressure
A) chiller pressure must be increased to a positive pressure less than 10 psig B) should be increased by adding nitrogen C) chiller refrigerant must be recovered and replaced with nitrogen D) chiller pressure must be reduced to a safe level, under 150 psig