Describe how to use the information illustrated in the potential energy diagram below to determine the enthalpy change of the reaction and if the reaction is
endothermic or exothermic.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

answer: i dont know the answer but this might

explanation:

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