1 point 50. Zinc does show variable
valency like d-block elements
because : *
O a) It is a metal
O b) It is low melting
c) Two melting are present in
outermost orbit
O d) d - orbital is complete.​

Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1

Identify a specific example for each type of technology

What is the mass of 4 molecules of co2