3.) A sample of argon goes from 500 K to 350 K and its pressure changes from 280 kPa to 380 kPa. If the
initial volume is 18 dms, what is the final volume?

4.) A sample of neon experiences a pressure drop from 75 kPa to 53 kPa. The temperature increases from
27°C to 93°C. If the initial volume is 12 L, what is the final volume?

5.) The volume of a sample of helium increases from 5 L to 25 L and its temperature drops from 2000 K to
1750 K. If the initial pressure is 1500 mm Hg, what is the final pressure?