During the first of the universe's history, atoms could not exist. a. second b. 3 minutes c. 157 hours d. 45 months

None of the above.

By 3 min after the Big Bang, the universe had cooled down for nuclei to form.

It took 380 000 years for the universe to cool down enough that electrons could be trapped in orbits around nuclei and form the first atoms.

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.