Your strategy here will be to
The ideal gas law equation looks like this
#P# - the pressure of the gas Notice that the problem does not provide you with the number of moles of gas, but that it does give you the mass of the sample. To get the number of moles that are present in that #"14.2-g"# sample of nitrogen gas, #"N"_2#, use the compound's molar mass.
Rearrange the ideal gas law equation and solve for #T# - notice that all the values given to you are expressed in units that match those used for the universal gas constant!
This will give you
Now, the following relationship exists between temperature expressed in degrees Celsius and temperature expressed in Kelvin
In your case, the temperature of the gas in degrees Celsius will be
Rounded to two sig figs, the number of sig figs you have for the pressure of the gas, the answer will be
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