Hurry i need an answer with the rights points

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease

How many moles are contained in 5.6 l of h2 at stp

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.