chemistry help pls

Question

A 0.813 g sample of sulfur hexafluoride gas at 25^oC occupies a volume of 0.616 L, what is the pressure in torr?

Answer 1

Hello, Molly,

Use PV = nRT

Convert the grams SF₆ into moles by dividing the mass by the molar mass. n = 0.00557 moles. I use R with units of atm, and will covert to toor afterwards.

Make a table and solve for pressure. Make sure the units cancle and that just atm is remaing. Then convert atm to torr (1 atm = 760 torr). I found 168 torr, but I went through it quickly.

Bob