Why dose sand absorbe heat faster than the water at the beach? and how do you know?

Iwill give extra points to who gets this right

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

Word equation for k(s) +h2o(l) yield koh (aq) + h2