The equation below represents the overall cell reaction for an electrochemical cell that undergoes a spontaneous reaction. fe(s) + pb2+(aq) mc011-1.jpg fe2+(aq) + pb(s) emc011-2.jpgcell = –0.31 v which reaction is the spontaneous reduction reaction? fe(s) mc011-3.jpg fe2+(aq) + 2e– emc011-4.jpg = –0.44 v fe(s) mc011-5.jpg fe2+(aq) + 2e– emc011-6.jpg = +0.44 v pb2+(aq) + 2e– mc011-7.jpg pb(s) emc011-8.jpg = –0.13 v pb2+(aq) + 2e– mc011-9.jpg pb(s) emc011-10.jpg = +0.13 v

Plz me ! 1 which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia if you answer all questions right i will give