Consider an ideal gas that occupies 1L in a cylinder with movable piston under the pressure of 10atm. if the external pressure of 10atm compresses 9atm due to nine pieces of small removable blocks of equal weights and 1atm due to atmospheric pressure, calculate the expansion workdone by the gas when: I. the nine blocks are removed from the piston at once
II. eight blocks are removed from the piston at once
III. eight blocks are removed from the piston in two batches, i. e. four blocks at a time​

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