Describe the features of a partially filled aquifer layer. What will be an ideal response?
Below ground, some rocks layers can contain water. In the zone of aeration, the pore spaces only
contain air; in the zone of saturation, the pore spaces contain water. The water table is the surface that
separates the zone of aeration from the underlying zone of saturation.
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A man weighing 800 N stands at rest on two bathroom scales so that his weight is distributed evenly over both scales. The reading on each scale is
A) 200 N. B) 400 N. C) 800 N. D) 1600 N. E) none of the above
Which of the following statements are true? (i) the pKa of thiols is similar to that to phenols (ii) little or no hydrogen bonding occurs between thiol molecules (iii) thiols and disulfides are important in nucleic acid chemistry
A) (i) and (ii) only B) (i) and (iii) only C) (ii) and (iii) only D) (i), (ii) and (iii)
The upper limit of the zone of saturation is known as the water table
Indicate whether the statement is true or false
When ice melts into liquid water, a(n) _____________________ change has occurred.
Fill in the blank(s) with the appropriate word(s).