EDTA ion is an/a
a. Cation
b. Anion
c. Dinegative ion
d. None of above

10. according to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

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