number of molecules / avogadro's number * molecule molecular = mass
we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –
. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,
will have a gram-molecular weight of 352g.
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.