Sam lives in the city of springdale and is interested in how the climate in his city compares to the climate in ecuador. which of the following is a testable question that could him make this comparison?
is the climate in ecuador better than the climate in springdale?
do high pressure systems prefer forming in ecuador compared to in springdale?
are thunderstorms in ecuador as scary as thunderstorms in springdale?
are average yearly temperatures in ecuador greater than in springdale?

Match the name of the following compound:   mgso4  · h2omagnesium sulfate monohydratemagnesium (ii) sulfate monohydratemagnesium (ii) sulfate hydratemagnesium sulfate hydrate

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

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5