The stress-strain curve for a brass alloy is provided below. The inset is a magnified view of the elastic regime of this stress-strain response. What is the approximate elastic modulus of this brass, in units of psi.

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).

a electronegativity decreases beacuse the size of nucleus is bigger.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2