Order these stars from dimmest to brightest: supergiant, yellow dwarf, giant, and red dwarf.(2 points) red dwarf, yellow dwarf, supergiant, giant
yellow dwarf, red dwarf, giant, supergiant
supergiant, giant, yellow dwarf, red dwarf
red dwarf, yellow dwarf, giant, supergiant

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

Sugar is dissolved in water. which is the solute? sugar neither both water

The molar mass of iron(fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?