2500g of octanitrocubane (C8N8016) are detonated. The resulting gases are carbon dioxide and nitrogen gas. What will be the volume of the nitrogen gas at 700K and standard pressure? What will be the volume of the carbon dioxide?​

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.