The answer that would best complete the given statement above would be the term PHASE. Here is the complete statement. <span>A homogeneous portion of a mixture that is characterized by uniform properties and capable of being separated by mechanical means is called a PHASE. Hope this helps.</span>
Answer:
C. Dissecting microscope
Explanation:
It is trying to see the surface
The concentration of
in the stack gas = 12 ppmv
That means 12 L of
is present per 
The given temperature is 273 K (0 C) and pressure is 1 atm. At these conditions, 1 mol of gas would occupy,


V = 22.4 L
1 mol
occupies 22.4 L
Moles of
= 
Mass of
=
=
μg
Converting
:
= 
Calculating the concentration in μg/
:

If we remove 2 electrons, the new charge will be positive by 2 units. Hence, the ion is

.
The person on top is very correct have a beautiful lovely day:)