Two objects have been heated until they glow. They appear to be different colors. Is it possible that they have the same temperature ?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Kp is the equilibrium constant for dissociation of the propionic acid dimer. what is the sign of the slope for a plot of the natural logarithm of kp vs. inverse temperature for this reaction?

What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?