Below are the steps of the engineering process(not necessarily in order) 1) know the background 2) do the work 3) make a plan 4)identify a need 5)evaluate and redesign 6) test the results
what is the correct order for these steps?
a) 431256
b) 412356
c) 123456
d) 413265

option A

Explanation:

431256 is in correct order

Everything haplens due to a necessity hence u need to know the need.next u definitely need a plan, then do the work,evaluating and rediesigning is necessary to give it a final look and at last obviously test the results

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.