0.500-mol sample of sucrose what is the mass in grams of this sample

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

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both