Suppose a buffer solution is made from formic acid (hcho2) and sodium formate (nacho2). what isthe net ionic equation for the reaction that occurs when a small amount of sodium hydroxide is added to the buffer? a)naoh(aq)+ hcho2(aq) -> nacho2(aq) + h2o(l)b) na+(aq) + hcho2(aq) -> nah(aq) + hco2+(aq)c) oh-(aq) + hcho2(aq) -> cho2-(aq) + h2o(l)d) h3o+(aq) + oh-(aq) -> 2h2o(l)e) naoh(aq) + h3o+(aq) na+(aq) + 2h2o(l)

What can be added to the examples section of each circle? endothermic: ice melting into water, and a heat pack becoming warm exothermic: a glow stick glowing, and fireworks exploding endothermic: ice melting into water, and an instant ice pack turning cold exothermic: fireworks exploding, and gasoline burning endothermic: a glow stick glowing, and a heat pack becoming warm exothermic: an instant ice pack turning cold, and ice melting into water endothermic: gasoline burning, and an instant ice pack turning cold exothermic: ice melting into water, and an instant ice pack turning cold

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble