Marble chips (calcium carbonate) react with dilute hydrochloric acid. calcium + hydrochloric → calcium + carbon + water
carbonate acid chloride dioxide

A student wanted to find out if the size of the marble chips made a difference to how fast the reaction took place. What two variables should she measure and take of?

PLEASE HELP I HAVE A TEST RIGHT NOW

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices