Which temperature change would cause the volume of a sample of an ideal gas to double when the pressure of the

Question

sample remains the same?

1. from 200 Degrees Celcius to 400 Degrees Celcius

2. From 400 Degrees Celcius to 200 Degrees Celcius

3. From 200 K to 400 K

4. From 400K to 200K?

thanks a bunch!! =}

Answer 1

3.  increase the temperature to increase the volume at constant pressure, but use K scale to really double the temperature, using C isn't the real deal.