It’s A.
They do make observations and perform experiments.
They make multiple experiments and for the experiments, they record the data collected.
You good though mamas got to Scientific and it was growing in general
The answer would be 2+ since the atomic number represents how many protons are in the element. In this case, there are 16 protons, but only 14 electrons, which means there are an additional 2 protons, hence the 2+ charge on the ion.
The answer is A. Nitrogen Oxide
Explanation:
Relation between pressure of water and its droplet is as follows.
where, p = pressure of droplet
= water pressure in given temperature
=
M = Molecular Weight in Kg/Mol (0.018 for water)
r = radius in meters
= density of water in
(1000
)
R = ideal gas constant (8.31)
T = temperature in Kelvin
(a)
We will calculate the value of p as follows.
p =
=
= 26.8 torr
(b) And, vapor pressure of spherical water droplets of radius 2.0
or 
p =
=
= 25.2 torr