A canister of compressed hydrogen gas, H2, with volume 5.25 L is stored in a cool location with a temperature of 13.5 °C. If the pressure gauge reads 5.462 mmHg, how many grams of hydrogen gas, H2, does the canister contain? Please Help

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.

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