When copper (ii) carbonate is heated if forms copper (ii) oxide and carbon dioxide?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.