What would cause the shape of a molecule to be tetrahedral?
a. three atoms bound to a central atom with one lone pair
b. four atoms bound to a central atom with two lone pairs
c. four atoms bound to a central atom with no lone pairs
d. two atoms bound to a central atom with two lone pairs

A molecule is tetrahedral if the central atom has four bonds and no lone pairs. Explanation: ... The electron pairs in the bonds repel the electrons in the other bonds, so they all try to get as far from each other as possible.

C. Four atoms bound to a central atom with no lone pairs

Explanation:

a pe x

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.