Which of the following is the correct expression for the rate of the following reaction? note: not all species are gaseous. cuo(s) + h2s (g) < --> cu(s) + h2o (g) a. [cu] x [h2o] / ([cuo] x [h2s]) b. [h2o] / [h2s] c. [cuo] x [h2s] / ([cu] x [h2o]) d. none of these are correct

How many moles of gas are present if p=11 atm, v=12l, t=185k?

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

What does the mass of 0.7891 mol of ferric oxide (fe2o3)