4Al(s) + 302(g) -> 2Al2O3(s) How many oxygen atoms are in the product when 4 atoms of solid
aluminum react with 3 molecules of oxygen gas?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

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

How many grams of mgbr2 are needed to produce 75g or metal?