A student wonders if bubbles on this watermm be plant are oxygen gas Which observation would provide indirect evidence that supports a hypothesis that the bubbles are O2

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

Calculate the number of molecules present in 0.750 mol of mgo.

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