How many molecules of h2o are in 97.28 g of h2o?

Which term describes a fracture in the earth at which land stays in the same place? a. joint b. fault c. split d. hinge

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

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false