MOLE CONVERSIONS 1. How many H2O molecules are in 183.2 grams of H20 gas?
2. How much space (L) does 3.614 x 1026 molecules of H2O2 take up?
3. How many molecules are in 3492.5 grams of Mg3(PO4)2?
4. How many grams does 60.2 L of AI(NO3)3 weigh?
5. How many N2 molecules are in 473.2 grams of Nz?
6. How many grams does 80.34 L of H2 weigh?
7. How many grams are in 5.39 x 1025 molecules of Al(OH)3?

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.