Obtaining crude oil for refining is an example of A. Constructive occupation
B. Extractive occupation
C. Manufacturing occupation
D. Tertiary occupation
E. Service occupation

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.