Question

part a: which molecular level view contains a homogeneous mixture consisting of helium (he) and nitrogen dioxide (no₂) gases?
part b: which molecular level view contains a homogeneous mixture consisting of neon (ne) and krypton (kr) gases?

Explanation:

Step1: Recall homogeneous mixture

A homogeneous mixture has uniform composition. Noble - gas mixtures are homogeneous when atoms are uniformly distributed.

Step2: Analyze images

Look for an image with uniformly mixed Ne and Kr atoms.

Answer:

(No answer given in the image. Need to analyze the images to find the one with uniformly - mixed Ne and Kr atoms.)