The following questions are about ceramic silicon nitride size: 1) determine the type of chemical bonding between si and n, given the electronegativity of si and n are 1.8 and 3.0, respectively. 2) if si forms tetrahedron with n, what is the coordination number of si? what is the hybridization type of si, sp, sp or sp ? 3) how can the sina tetrahedra be linked to satisfy the 3: 4 ratio of si to n

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids