Which of the answer choices lists a compound? h2, h2o, nacl, or o2

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next