4. When a 50 gram piece of metal as 100°C is placed in 50 grams of water at 20°C, the water and metal will reach thermal equilibrium at some intermediate temperature. Explain why the equilibrium temperature is not at the
midpoint between 20*C and 100'C.

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

Which element is least likely to undergo a chemical reaction