Which coefficients in the order given balance the reaction? Br2 +
PA
-
PBr3 :
O A. 6, 1,4
B. 6, 1,2
O C. 3, 1,4
O D. 2, 2, 2

Evaluate this exponential expression,8. (2 + 3)2 – 42

What must happen before a body cell can begin mitotic cell division

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?