what is the molarity of a solution that contains 4.42 moles of Rubidium nitrate in 3.0 liter solution

In this reaction n2o4(g)→2no2(g) what changes in color would you expect as pressure is increased at a constant temperature

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.