Energy questions if you dk dont awnser -
Energy transfer occurs when a warmer object is in contact with a cooler one.
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Energy transfer when a electrical source is connected in a complete circuit to an electrical device.
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Energy transfer can be transferred through matter or empty space via -

You can only choose the awnsers on the picture

1: thermal

2:electrical

3:electromagnestic waves

nose

Explanation:

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

i think it is true since you can test the answer and can use observations to complete it.