bronze contains 90 to 95 percent copper and 5 to 10 percent tin. because these percentages can vary, bronze is classified as

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 compound contain an iron with a 3+ charge

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.