An embankment construction requires the delivery of 38,200 m3 of the soil from a stockpile (d= 87 pcf, w=13%) to the construction site. the moisture content of the soil at the construction site is 9%. the compactors specifications indicate that the soil needs to be compacted to a minimum of 90% of modified proctor maximum dry unit weight. laboratory compaction tests yielded a maximum dry unit weight of 116 pcf. how much water (in cubic feet) must be added to the soil to increase its moisture content to the optimum moisture content of 14%

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

d

explanation:

the pseudoscience are like beliefs, theories, or like practices that are considered scientific