An empty aerosol-spray can at room temperature (20 ◦C) is thrown into an incinerator where the temperature reaches 674◦C. If the
gas inside the empty container was initially at
a pressure of 1 atm, what pressure did it reach
inside the incinerator? Assume the gas was at constant volume and the can did not explode.
Answer in units of atm

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.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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