For the radical chlorination of methane, one of the propigation steps is a hydrogen abstraction:Instead of methane, you are using bibenzyl. Draw the structure of bibenzyl in your lab notebook. Bibenzyl has two benzylic positions. Benzylic radicals are particularly stable (similar to benzylic carbocations.) Assume that the bromine radical from the NBS initiation step attacks one ofthe benzylic hydrogens. Draw the mechanism for this propagation step for the reaction between bibenzyl and NBS.

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