For the questions that follow, consider the BEST Lewis structures of the following oxyanions: (i) NO2- (ii) NO3- (iii) SO32- (iv) SO42- (v) BrO3- There can be four equivalent best resonance structures of .(i) A. (i) B. (ii) C. (iii) D. (iv) E. (v)

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

What was bohr’s contribution to the planetary model