The answer is 2, liquid to vapor because vaporization is the process of liquids to vapors.
Solution
Given mass of FeBr2 = 85.5 g
Molar mass of FeBr2 = 215.65
No. of Moles of FeBr2 = Given Mass / Molar mass = 85.5 / 215.65
No. of Moles = 0.3964
Given Volume is 450 mL i.e. 0.450 L
Now Concentration = 0.3964/0.450
Hence Concentration = 0.881 mol/L
H-C≡C-H this is the lewis structure of acetylene
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Answer:
Noble gases
Explanation:
Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. As you can see in the periodic table in the figure below, noble gases include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).18 Jun 2021
Explanation:
(6.1). The reaction equation will be as follows.

Assuming the value of
as
and let the solubility of each specie involved in this reaction is "s". The expression for
will be as follows.
(Solids are nor considered)
=
s = 
= 
= 
Therefore, solubility of barium sulfate in water is
.
(6.2). As the molar mass of
is 233.38 g/mol
Therefore, the solubility is g/L will be calculated as follows.

= 
Therefore, solubility of barium sulfate in grams per liter is
.