Which equilibrium constant expression is correct for 2NaHCO3 (s) ⇌ Na2CO3 (s) + CO2 (g) + H2O(g)

[CO2][H2O]

1

[CO2][H2O]2

. [Na2CO3][CO2][H2O]

[NaHCO3]2

[Na2CO3][CO2][H2O]

[NaHCO3]

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

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 of these is a physical property