Answer:
Explanation:
Calcium is the element of the group 2 and period 4 which means that the valence electronic configuration is .
Chlorine is the element of the group 17 and period 3 which means that the valence electronic configuration is .
Thus, calcium losses 2 electrons to 2 atoms of chlorine and these 2 atoms of chlorine accepts each electron to form ionic bond. This is done in order that the octet of the atoms are complete and they become stable.
Ca Cl
2 1
Cross multiplying the valency, We get,
Thus, the formula of calcium chloride is .
Explanation:
The given data is as follows.
Weight of = 0.9 ppm = 0.9 mg/kg
Diameter =
radius = =
=
height = 74.50 mm = 0.0745 m (as 1 mm = 0.001 m)
Hence, calculate the volume as follows.
Volume of tank =
=
=
= (as = 1000 L)
Therefore, weight of for water
=
=
=
= 0.366 g
Hence, moles of will be calculated as follows.
No. of moles =
=
= 0.0192 mol
Moles of = moles of NaF
Therefore, weight of NaF = Moles × Molecular weight
=
= 3.83 g
Thus, we can conclude that weight of NaF is 3.83 g.
Sodium hydroxide is very corrosive is generally used as solid or a 50% solution
An organ.....................................................................................................
Nitrogen cycle is the series of processess where nitrogen and its compound move through the environment and in living organisms. The processes here include fixation, ammonification, nitrification and denitrification. Majority of Earth's atmosphere is nitrogen.