gabe7774

08.01.2020 • 

Chemistry

The table shows the thermodynamic data for a reaction.

thermodynamic data
energy of the reactants energy of the products activation energy
−420 kj −240 kj −310 kj

which of the following statements explains if the reaction is endothermic or exothermic?
the change in enthalpy is +180 kj, so it is an endothermic reaction.
the change in enthalpy is −180 kj, so it is an exothermic reaction.
the activation energy is lower than the change in enthalpy, so it is an exothermic reaction.
the activation energy is higher than the change in enthalpy, so it is an endothermic reaction.

Ответ:

evandlubbep6bsvu

01.04.2023

Chemistry

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The postulate or theorem which proves that EFG and HJK triangles are similar is Angle-Angle  (AA)

according to it

In case of two triangles if two pairs of corresponding angles are congruent, the triangles are considered to be similar triangles.

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