which is a cause of polarity in water molecules? partial negative charge on the hydrogen atomspartial positive charge on the oxygen atomhigh electronegativity difference between oxygen and hydrogenlow electronegativity difference between oxygen and hydrogen

high electronegativity difference between oxygen and hydrogen

Explanation:

The electronegativity value of O and H are 3.5 and 2.1 respectively. The electronegativity difference of the O-H bond in H₂O is 1.4.  

Thus the O-H is a polar covalent bond. This explains the polarity in water molecules.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.