When fat comes in contact with sodium hydroxide, it produces soap and glycerin. Determine whether this is a physical change or a
1 answer:
You might be interested in
Answer:
the packing efficiency is 52.36%
Explanation:
Given the data in the question;
simple cubic unit cell that contains one atom with a metallic radius of 175 pm;
we know that;
Edge length of Simple cubic (a) is related to radius of atom (r) as follows;
a = 2r
since radius r = 175 pm
we substitute
a = 2 × 175 pm
a = 350 pm
Now we get the volume unit;
Volume of unit cell = a³ = ( 350 pm ) = 42875000 pm³
Next we get Volume of sphere;
Volume of Sphere = πr³
Volume occupied by 1 atom = × π × ( 175 pm )³
= × π × 5359375 pm³
= 22449297.5 pm³
Now, the packing efficiency = ( Volume occupied by 1 atom / Volume of unit cell ) × 100
we substitute;
packing efficiency = ( 22449297.5 pm³ / 42875000 pm³ ) × 100
= 0.523598 × 100
= 52.36%
Therefore, the packing efficiency is 52.36%
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 .