A chemist wants to extract copper metal from copper chloride solution. The chemist places 1.50 grams of aluminum foil in a solution of 14 grams of copper (II) chloride. A single replacement reaction takes place. What best explains
the state of the reaction mixture after the reaction?
Unbalanced equation: CuCl2 + Al - AlCl3 + Cu (5 points)
O Less than 6.0 grams of copper is formed, and some aluminum is left in the reaction mixturlar
O More than 6.5 grams of copper is formed, and some aluminum is left in the reaction mixture.
O Less than 6.0 grams of copper is formed, and some copper chloride is left in the reaction mixture.
O More than 6.5 grams of copper is formed, and some copper chloride is left in the reaction mixture.

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

Which statement best describes the flow of energy in this scenario