Pv = nrt
r=0.08206 (constant)
if a student has 7.2 liters of an ideal gas in a container at 3.0 atm and 310 k, how many moles of the gas are
present? the constant ris 0.08206 l(atm) / mol(k).

n=.849103 moles

Explanation:

We want n, so we change the equation to be n= PV/RT

Then plug in the numbers and solve

n=(3*7.2)/(.08206/310)

n=.849103 moles

Hope this helps

a electronegativity decreases beacuse the size of nucleus is bigger.