If blue represent one atom of nitrogen, and red represent one atom of oxygen, which represents 2no^2

option D

Explanation:

Given that blue represent one atom of nitrogen and red represent one atom of oxygen, then one atom of (nitrogen dioxide) is represented by 2 red spheres bounded to 1 blue sphere. Therefore, two atoms of are represented by option D.

they are made of gases.

they have a spherical shape.

they make energy through fusion.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.