An aluminum oxide component must not fail when a tensile stress of 16.5 mpa is applied. determine the maximum allowable surface crack length if the surface energy of aluminum oxide is 0.90 j/m2. the modulus of elasticity of this material is 393 gpa.

90 per square surface of the inner difference between both.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).