Question

The Δ sign written above the arrow indicates ________ of the reaction.​

Answer 1

Answer: If the reaction requires energy, it is often indicated above the arrow. A capital Greek letter delta (Δ) is written on top of the reaction arrow to show that energy in the form of heat is added to the reaction; hv is written if the energy is added in the form of light.

Explanation:

Answer 2

Answer:

the sign of triangle is called delta and it represents heat

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