Elements in the same group have similar properties. Which pair of elements would you expect to have similar properties? O carbon (C) and silicon (Si)
O copper (Cu) and zinc (Zn)
O hydrogen (H) and helium (He)
O nitrogen (N) and oxygen (O)

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant