3 L of a gas at 250 K is changed to a temperature of 300 K. What is the final volume?

you can simply answer vl\t1=v2/t2

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.