hello, i am in an advanced chemistry class in my high school with college level chemistry. can you help me with this question?

What will the volume of 21.0g of Flourine gas be if the gas is measured at 720mm and 54 degrees Celsius.

hello, i am in an advanced chemistry class in my high school with college level chemistry. can you help me with this question?

What will the volume of 21.0g of Flourine gas be if the gas is measured at 720mm and 54 degrees Celsius.

You have a mass (21.0 g), which can easily be converted to quantity (number of moles, n).  Remember that fluorine gas is diatomic.  You also have a pressure of 720 mm Hg.  I'm more accustomed to working in kPa, so I would convert that value to 101.3 kPa.  Your temperature value must be converted to absolute temperature (0 C = 273 K).  Finally, you have the universal gas constant, whose numerical value changes depending on what pressure units you're working in.  The equation that relates these parameters to volume is the Ideal Gas Law, PV = nRT.  So just sub in your known values and solve for V.