Question

Nitrogen Gas Occupy A Volume Of 413 At Pressure Of 217 Mmhg Caluclate Its New Volume When The Volume Increases To 612 Mmhg

Answer 1

assuming the temperature does not change, PV is constant.
So, you want V such that

V*612 = 413 * 217

and that's mmHg, not Mmhg

Answer 2

AND it's the new pressure you want. Volume is not measured in mm Hg.

Answer 3

yes, maybe. Since he said mmHg, I assumed he meant the new pressure instead of the new volume was 612 mmHg.