The spectrum of star s is compared to a reference hydrogen spectrum. what can be concluded about star 5? select all that apply. star s is moving away from the earth. star s is moving toward earth. star s has transverse motion. stars has radial motion.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.