How many places after the decimal should your measurements contain?

Minimum 2. ( Thats how I do, and till now there is no probs)

Thank You'

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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.

indium, and thallium have three electrons i think